Hex drill bits with titanium coated high speed steel,increasing wear resistance and durability.The is hardened and honed for sharpness,suited for wood,aluminum alloy,stainless steel,plastic,etc.Form and 135Split Point: 135 Split Point makes drilling easy with less pressure and prevents drill bits from walking.Quick Change: 1/4inch hex compatible with power screwdrivers,impact drivers,and other tools that accept 1/4inch hex shanks,eliminates the frustration of spinning in chuck,locking into a chuck without slipping and falling off.Size: 1/16,5/64inch,3/32inch,7/64inch,1/8inch,9/64inch,5/32inch,11/64inch,3/16inch,13/64inch,7/32inch,15/64inch,1/4inch,17/64inch,9/32inch,19/64inch,5/16inch,21/64inch,11/32inch,23/64inch,3/8inch,25/64inch,13/32inch,27/64inch,7/16inch,29/64inch,15/32inch,31/64inch,1/2inch,storage in a box with size indexRemarks: The specifications of this product are all sizes.The material of this product is high-speed steel 4241,rolled with titanium plating,and the handles are all hexagonal handlesColor: GoldMaterial: high speed justPackage Contents:29 x Drill Bit1 x Hexagon Only the above package content,other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/- 1-3cm.