Introduction: New Product Launch & Industry Pain Points
Johnson Tools is proud to officially launch its brand-new7-Pcs Vacuum Brazed Diamond Hole Saw Kit, a upgraded and all-in-one drilling solution tailored for professional tile contractors, construction workers, and global tool distributors. For years, the industry has been plagued by common drawbacks of traditional drilling tools when processing hard building materials like porcelain tile, marble, and granite. Conventional diamond core drill bits are prone to edge chipping, short service life, and overheating burnout during dry drilling, leading to low construction efficiency, high tool replacement costs, and unsatisfactory finished hole quality.
To solve these persistent pain points, our new Diamond Core Drill Bit Set for Porcelain Tile breaks the limitations of traditional split tools. It integrates drilling, hole expanding, edge trimming, and multi-device adaptation into one complete set, effectively improving on-site construction efficiency and reducing overall procurement costs for end users. As a professional wholesale vacuum brazed diamond hole saw manufacturer, Johnson Tools designs this upgraded set to deliver maximum value for both individual contractors and bulk distributors.

Key Specifications & Core Technical Highlights
Engineered for professional-grade durability and versatility, this7 pcs diamond hole saw kit with aluminum case adopts industry-leading vacuum brazing technology and humanized accessory configuration, standing out from ordinary drilling tool sets with its superior hardware strength.
1. Full-Coverage Multi-Size Drilling Range
This comprehensive diamond tile hole saw kit comes with 5 core drill bits in mainstream practical sizes: 20mm, 27mm, 35mm, 55mm, and 68mm. The complete size coverage fully meets the drilling needs of water pipes, circuit holes, drainage outlets, ventilation openings and other conventional construction scenarios, making it an ideal choice for daily renovation and hard material processing projects.
2. 15mm Thickened Diamond Layer for Ultra-Long Service Life
Adopting premium vacuum-brazed diamond core drill bits technology, each drill bit is equipped with a 15mm thick diamond layer height. Compared with ordinary electroplated and sintered drill bits on the market, this upgraded structure greatly enhances wear resistance, impact resistance and high-temperature resistance. It effectively avoids premature diamond grain falling off and tool failure, extending the service life significantly even in frequent hard-stone drilling tasks.
3. Multi-Functional Accessories for One-Stop Processing
What makes this set unique is its matched auxiliary tools, forming a vacuum brazed diamond core bit set with finger bit for integrated processing. The supporting 20mm #50/60 grit finger milling bit enables precise hole expansion, edge trimming and curve processing after drilling, eliminating the need for end users to purchase additional trimming tools and realizing one-hole one-time forming.
Equipped with a professional M14 to 3/8 hex shank adapter for diamond hole saw, the standard M14 thread diamond hole saw can be seamlessly compatible with angle grinders, electric drills, bench drills and various mainstream construction equipment. It solves the compatibility problem of different power tools and greatly expands the application scope of the drill set.
4. Premium Aluminum Carry Case for Portable Storage & Protection
All tools are stored in a customized high-strength aluminum case with a dimension of 33.5×14×10.5cm. The sturdy and shockproof shell provides reliable protection during long-distance transportation and on-site carrying, preventing tool damage and loss. Meanwhile, the classified internal layout keeps all drill bits and accessories neatly organized, convenient for on-site sorting and daily storage.

Superior Performance & Versatile Application Scenarios
As the best diamond hole saw kit for porcelain tile and granite, this professional drill set is specially optimized for hard and brittle building materials, including porcelain tile, full-body tile, ceramic, marble, granite and other natural stones, covering most renovation and stone processing scenarios.
It supports dual dry and wet drilling modes to adapt to different construction environments. For indoor temporary construction and sites without water supply, the optimized heat dissipation structure ensures stable dry drilling operation, avoiding tool burnout caused by high temperature. For standard construction scenarios, wet drilling with water cooling can further reduce drilling friction, inhibit dust pollution, and extend the service life of the diamond core drill bits.
More importantly, the combination of drilling bits and finger milling bit realizes a breakthrough in dual-process integration. It completes rapid punching and fine edge trimming in one process, eliminating secondary trimming procedures, greatly shortening the single-hole construction time and effectively improving the overall work efficiency of contractors.
Commercial Benefits for Distributors & B2B Buyers
This new Diamond Core Drill Bit Set for Porcelain Tile is not only a high-efficiency construction tool for end users, but also a high-profit competitive product for global tool distributors and wholesalers.

1. High Cost-Performance & Stable Profit Margins
The integrated design of drilling and trimming replaces the traditional separate procurement of drill bits and trimming tools, reducing the overall purchase cost for end users. For distributors, the complete set configuration improves product added value and customer repurchase rate, bringing stable and considerable profit margins in the fiercely competitive tool market.
2. Custom OEM & ODM Support
As a reliable supplier, we provide professional OEM diamond tile hole saw kit for distributors services. We support customized combinations of drill bit sizes according to customer market demand, and provide personalized customization such as outer packaging switching (aluminum case or color box) and laser logo marking on tool surfaces, helping distributors build their own brand image and meet differentiated market needs.
3. Factory Direct Supply & Reliable Supply Chain
All products are directly supplied by our factory, with no middlemen markup. We provide tiered wholesale prices for bulk orders, stable production capacity and guaranteed delivery cycles. Strict quality inspection procedures effectively reduce product failure rate and after-sales risks, helping B2B buyers stabilize their terminal customer groups and expand market share.
FAQs for Contractors & Distributors
Q1: Is this diamond hole saw kit available for dry cutting?
A: Yes. This vacuum brazed diamond core bit set supports both dry and wet drilling modes. The optimized heat dissipation and high-temperature resistant diamond layer structure allows stable dry cutting operation. For long-time continuous dry drilling, it is recommended to take intermittent cooling measures to further prolong tool life; wet drilling is more recommended for high-precision and long-term construction.
Q2: Can it be used directly with ordinary electric drills?
A: Absolutely. The set is equipped with a dedicated M14 to 3/8 hex shank adapter for diamond hole saw. The original M14 thread diamond hole saw can be quickly converted to fit ordinary household and industrial electric drills, angle grinders and bench drills, with strong equipment compatibility and no need for additional accessories.
Q3: What is the main purpose of the finger milling bit?
A: The matched finger bit is a core upgraded accessory of this set. It is mainly used for fine hole expansion, irregular hole edge trimming, and curve polishing after drilling. It can effectively eliminate edge burrs and stress cracks of hard brittle materials, ensure smooth and neat hole walls, and improve the overall construction finish without secondary processing.
Q4: How to get product samples and wholesale quotations?
A: We support sample testing and bulk wholesale cooperation. Please contact our sales team to confirm the MOQ policy, latest tiered wholesale prices, OEM customization details and delivery cycles. We will provide one-stop purchasing and customization solutions according to your market demand.
Conclusion & Call to Action
The new Johnson Tools 7-Pcs Vacuum Brazed Diamond Hole Saw Kit redefines precision and efficiency in hard material drilling. With reliable vacuum brazing technology, multi-size full coverage, multi-device compatibility and one-stop processing functions, it solves the core pain points of traditional drilling tools, becoming a powerful helper for professional tile contractors, construction workers and stone processing practitioners.
For global tool distributors and bulk purchasers, this high-cost-performance, customizable and high-revenue product is an excellent choice to enrich product lines and enhance market competitiveness. Whether you need sample testing, bulk wholesale, or exclusive OEM brand customization, Johnson Tools provides professional and reliable full-chain services.




