Hyjoy 5/16" (10pcs) Cobalt Drill Bit Set, M35 -Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Steel, Cast Iron, Wood and Plastic, wit

Single Size: The drill bits consist of 10 pieces of 5/16" drills. If you have specific size needs, then this drill bit set is very suitable for you M35 Cobalt Drill Bit: The M35 cobalt drill bit is versatile and efficient suitable for steel, iron castings, copper, aluminum, and other soft metals, as as plastics, wood, etc. Quick and Efficient: The cobalt drill bit set can effectively drill through most soft and hard materials, with 135 degree point tip and flute design for faster , self-centering to walk-off and faster chip and particle removal HSS Drill Bit Set: HSS cobalt drill bit set for hardened steel with enhanced durability. 13 sets of drill bits for extended use. The inserts are hardened and polished for sharpness and precise without wobbling to store: The drill bit set is contained in and package for convenient storage and transport. If you have any inquiries, contact us and we will be to help