1/4'' Shank Dry Drilling Diamond Hole Saws For Cutting Granite

Product Description

1. Premium Diamond and 45# steel raw material: Vacuum brazing of fully high-quality diamond at high temperature quenching makes it more sharp on drilling.
2. Built-in cooling wax: Cooling wax is inlaid inside of the bit head which can cool heat when dry cut the holes.
3. 1/4'' hex shank: Hex shank allows it to be held tightly by electric drills or bench drills

1. A grade diamond crystals for high performance ,and using special cutting structure, making the core bit works stably.It could be maintained higher drilling speed during the core bits rotaries drilling
2. Using high performance compound piece combination , enhances the core drill bit's life.
3. The highly polised cutter could reduce the frictional resistance and quicked discharge fragment so that improve the drilling efficiency.
4. Diamond core drill bits suitable for dry and wet drilling
5. Using widely ,mainly used for drilling and engraving Marble,Granite,Sandstone,Limestone,etc

Product Parameter

Application&Tools


Why Choose Us
1. 26-year Industrial experience and covers area of 11700㎡ with 6 workshops
2. Procucts can be made as you required and OEM/ODM
3. Free samples can be sent for evaluation
4. Professional before&after-sales teams 24h-online to solve your any technical problems.

ZhongZuan Tools

ZhongZuan Tools is a professional manufacturer of drill bit, hole saw and diamond tools with 26-year industrial experience.We provide you with a range of power tools accessories for metal,glass,ceramics,marble,granite etc materials cutting. Core products cover diamond hole saw,diamond blade saw,diamond polishing pad,HSS drill bit,bi-metal hole saw,carbide drill bit and hole saw as well as other hand tools like glass cutter,glass suction cup. We have gained rich experience in our products’ design,manufacturing and use so that we can produce suitable products for any complicated processing conditions.ZhongZuan Tools always brings our customers best solutions to solve their any problems in application. We’re committed to improving our products quality and our management level.Always fight for becoming a harmoniously-developing modern enterprise with premium products from advanced technology and customers’ satisfaction.

Zhongzuan(Chongqing)Precision Tool Manufacturing Co.,Ltd was found in 1995 and specialized in researching and producing high-quality hole saw bits and drill bits over 26 years,always aiming to be the leader and produce the best products. “ZhongZuan” was specially registered brand for overseas markets in 2017 from Changjiang Zuanshi,core products are Diamond hole saw bits,HSS twist drill bits,carbide drills and so on.

Zhongzuan is located in Chongqing, China and it covers about 11700 square meters. Registered capital reaches up to RMB 5millions and currently there are over 120 employees. “Zhongzuan” owns rich experience in the design,manufacturing as well as use. We’re dedicated to design products for complex processing condition,help clients solve various problems of products and provide professional solutions.ZhongZuan has been cooperating with customers from over 10 countries globally so far.

Zhongzuan has professional technical personnel and experienced machine-tool operators,which makes us the capability of producing products with complex shapes and high-precision.Meanwhile, our professional after-sales team can quickly deal with customers on product quality and after-sales issues. Company is equipped with more than 100 sets of numerical control equipment and over 10 sets sophisticated detection equipment, which ensures the quality of massive production, at the same time, all steps from raw material procurement, processing, quality inspection, shipments will be strictly required to reach the standard, which makes our products more competitive in the international market so that our customers can also expand larger markets and make more profits.

Zhongzuan (Chongqing) Precision Tool Manufacturing Co., Ltd. is committed to improving product’s quality and management level, striving to become a modern enterprise with high-quality products, customer’s recognition, advanced technology and harmonious development.