Oxidized Black Step Up Drill Bit Step Cone Drill Bit For Wood

1. HSS Tin-Coated - High speed steel along with titanium coating ensures outstanding durability and sharpness,also reduces the friction,runs cooler.
2. Meet Your Demands - With the step drill bits we offered,you can process different kinds of diameter holes,which greatly saves you a lot of trouble.Great for metal/wood/plastic countersunk. Suitable for Home DIY,and General Building/Engineering Use.
3. Design - The split point tip is at 118 degrees to increase the wear resistance.The two flute design provides a smoother cutting,allows the material particles escape easily for a much more clean drilling operation.
4. Easy Organizing - A drill bits holder with size index is included in the metal kit for easy storage and organizing without fear of it falling out.

We provide you following HSS step drill bits

By flute: straight or spiral flute step drill bits.
By blade:single-edged double-edged or three-edged step drill bits.
By size: metric or imperial step drill bits.

Feature

1. Raw material as premium HSS materials and CBN full grinding craftwork.
2. Oxidized Black surface makes it more sharp and efficient,extends its service life.
3. Suitable for all kinds if metal working. The best drill bits in auto processing,space processing,metal processing and electrical repair.

Company profile

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.

Product Description

Size	Number of steps	Total length	Shank length	Shank diameter
4-12mm	5	62mm	22mm	6mm
4-12mm	9	68mm	22mm	6mm
4-20mm	9	71mm	22mm	8mm
4-22mm	10	73mm	22mm	8mm
6-30mm	13	95mm	22mm	10mm
4-32mm	14	102mm	22mm	10mm
4-39mm	13	97mm	25mm	10mm
5-35mm	13	73mm	25mm	13mm
4-40mm	16	103mm	25mm	12mm
10-45mm	9	98mm	25mm	13mm

Applications

Picture show

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.