1.HSS titanium coating: classic HSS 4241 construction with titanium coating for capability and durability. The cutting edge is hardened and honed for sharpness,chatter-free design with staggered cutting teeth make sure the precise.
2.Bladepoint design: the precise 135°split point of twist design drill, and round straight shanks. Let you reduce walking, clear chips and particles faster. Produced by precision fully ground which ensures chips move smoothly.
3.Meet your demands: premium drill bits set for metal/wood/plastic countersink, suitable for Home DIY, and general building and engineering use.
4.Use note: The drill bit should be clamped with appropriate force. A quarter should be left unused before use. It can be used after the rotation is normal.
5.Quick change: 1/4 inch hex shank fits into all power tools more easily and securely, specially for locking into quick change chuck.