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we can offer high quality products, competitive price and best customer service. Our destination is “You come here with difficulty and we give you a smile to take away” for , Our products are exported worldwide. Our customers are always satisfied with our reliable quality, customer-oriented services and competitive prices. Our mission is “to continue to earn your loyalty by dedicating our efforts to the constant improvement of our products and services in order to ensure the satisfaction of our end-users, customers, employees, suppliers and the worldwide communities in which we cooperate”.
Product advantages
Step reamer is a tool used for processing step holes. It can complete the process of drilling, reaming and reaming in one go to ensure the concentricity of 2 or more holes and improve processing efficiency and accuracy
Product advantages
Step reamer can be reamed and reamed at one time, so the efficiency and accuracy are high, and the finish of reamed workpiece can reach within 0.4
Tungsten steel reamer according to the customer’s product material, choose different coating, choose different cutting parameters
Bottom milling cutter structure, can reduce the burr on the opposite side of the hole, left and right cutting, suitable for through hole processing, right and right cutting, suitable for blind hole processing
Processing case
Brand: OPT
Model: D12.5*15*D15.9*25*D16*100
Material: HT250
Method: Reaming
Parameter: n=600rpm
Vc max=800m/min
Fn=0.2mm/rev
Ra: 0.4
cutting life: 25,000 holes
Tungsten steel step reamer can hinge a variety of materials of the workpiece, and the reamed hole finish can reach 0.6, can replace the old process hob processing step hole
Company Profile
Shenzhen OPT Cutting Tool Co., Ltd. one of the leading manufacture in China, specializes in developping and producing carbide and PCD diamond tools.


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Discountable price DTH Opener Bit and DTH Opener Drill Bit, Our products are exported worldwide. Our customers are always satisfied with our reliable quality, customer-oriented services and competitive prices. Our mission is “to continue to earn your loyalty by dedicating our efforts to the constant improvement of our products and services in order to ensure the satisfaction of our end-users, customers, employees, suppliers and the worldwide communities in which we cooperate”.