Features 1、Multi Purpose: Drill bit is suitable for iron aluminum copper, stainless steel, high speed steel, manganese steel, all kinds of quenched steel. 2、Fast Drilling: 19.5mm drill bit adopts spiral chip removal design, smoother chip removal, smoother and incisive slot, fast cutting, high drilling efficiency. 3、High Accuracy: Black twisting drill adopts 118° incisive angle design, fast and accurate drilling, saving time and effort, and improving work efficiency. 4、Excellent Material: Small shank drill bits are made of high quality high speed steel, with high hardness, stable performance, sharpness and durability. 5、Practical Durable: Straight shank twisting drill has a finely ground and incisive edge to meet different cutting precisions. It is very sturdy and practical. Specification Item Type: Drill Bit Product Material: High Speed Steel Blade Diameter:Approx. 19.5mm / 0.8in Shank Diameter: 1/2 Inch (12.7mm) Drill Bit Length:Approx. 150mm / 5.9in Uses: Suitable for Iron, Aluminum, Copper, Stainless Steel, High-speed Steel, Manganese Steel, Various Quenched Steel Parts Package List 1 x Drill Bit