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DIY Supplies:Metalworkinglength:34-151mmUse:Metal DrillingModel Number:HSS-COMaterial:High Speed SteelProduct Description:1. Material: Cobalt High Speed Steel2. Drilling hole diameter: 1.0mm to 20.0mm3. Hardness: HRC64-664. Recommend speed: 100-800R/MIN5. Suit for metal hole drilling, such as: stainless steel, mold steel, aluminum alloy, cast iron, copper, galvanized pipe, etc.* Harder alloy head material.* Perfect metal and wood drilling, such as: aluminum, iron, stainless steel.* Fine grinding of drill body, large groove design, which is beneficial to chip removal and does not damage tile wall.* Can be installed on hand drill, electric drill and bench drill.* Widely used in tiles, glass, brick walls, wood, etc. * Harder alloy head material. * Perfect metal and wood drilling, such as: aluminum, iron, stainless steel. * Fine grinding of drill body, large groove design, which is beneficial to chip removal and does not damage tile wall. * Can be installed on hand drill, electric drill and bench drill. * Widely used in tiles, glass, brick walls, wood, etc. ASIN B0BR2G2NPH Brand Name OTSYS Part Number 6996275866868 Manufacturer OTSYS Surface Recommendation Aluminum,Glass,Iron,Metal,Stainless Steel,Steel,Wood