【Versatility】Ideal counter sink tool for the tool box, including 5 most popular sizes: 1/4, 3/8, 1/2, 5/8, 3/4 inch counter sink drill bits. Including one Bit Holder and Storage Toolbox.
【IPENKONE M35 HSS Cobalt Layered Drill Bits】M35 cobalt coated, each metal countersunk drill bit is made from high quality M35 HSS material, IPENKONE countersink drill bit set is excellent in heat
【Five-blade design with 1/4" Hex Shank 】Each countersink drill is well designed in five-blade， which can reduce vibration and prolong life, achieve smoother drilling. Permanently attached 1/4" shank. Suitable for all types of drill bits and mold grinding machines. Easy to control with variable speed drill. 6000 R.P.M MAX.
【Precision Grinding 82°Countersink Drill Bit Set】Precision grinding 82°tip for drilling holes ，it is used for most medium hardness stainless steel, metals, plywood, softwood, hardwood, fiberglass plastic,mild steel copper, aluminum. These countersink drill bits work hard the profound processing, achieve exact countersink holes and allows the screw heads to be flush and even with the surface of the material being utilized.
