Twist drill is the most widely used hole machining tool. The usual diameter range is 0.25 to 80 mm. It is mainly composed of bit working part and shank. The working part has two spiral grooves, shaped like a twist, hence the name. In order to reduce the friction between the guide part and the hole wall when drilling, twist drill from the drill tip to the handle direction gradually reduce the diameter of the inverted cone.

Welcome to Behappy Crafts, we are the professional manufacturer of power tool accessories, we are specialized in drill bits, hole saw, cutting discs, etc. We produce various types of twsit drill bits, HSS4241, HSS4341, M35, M2, etc for metal working. Our Hss Co Twsit drill bits can be used to drill holes on stainless steels, fast working and dural to use. We can do the different surface treatment for the drill bits, like bright finish, tin coated, amber finish as per request.  We can also customize customers logos on the twist drill bits and package. So Weclome to visit us and start our cooperation soon.