ITEM NAME:1 Pc 1/4" HSS Unique Titanium Coated 11Step Drill Hex Shank Tool 3MM-13MM New.Material: HSS 4241. Shank :1/4 Hexagonal. Tools: pistol drill, bench drill. When inject cold water while working, can effectively extend the service life of the drill bit. 1 x 3-13mm Stepped drill. 4241 high-speed steel, used in hardness under 25 Â ° workpiece, the plate thickness under 5 mm.
