【With Four Spiral Flute】- Our drill bits are equipped with four spiral flutes, which significantly improves the stability of the drill during use. In addition, we have improved the quality of our raw materials, resulting in an extended lifespan that is twice as long as that of ordinary products on the market.
【Dimension】- This 3pcs set contains sizes of 1/4''-3/4'', 1/8''-1/2'' , 3/16''-7/8'' which can be widely used
【M35 Cobalt Ultra hard High Speed Steel】-As M35 is one of our raw material ,which is a high speed steel containing cobalt , so it is obvious that our drill is durable as M35 stands for high pressure resistance and high wear resistance etc.
【Compatible Strengths 】-We have increased the angle of the drill bit 's tip to 118° . Therefore , it is able to drill holes of a variety of diameters quickly and smoothly , which are stainless steel, aluminum, wood, plastic board (REMINDER:the board must be thinner than the height of the step drill)
【After-sale services】-Please do not hesitate to contact us if there is anything you are not satisfied with , no matter the quality or the package etc . We would like to offer you with worry-free service .