Description:

99pcs Drill Bits Include: 16pcs 1.5mm, 16pcs 2mm, 15pcs 2.5mm, 10pcs 3mm, 10pcs 3.2mm, 8pcs 3.5mm, 8pcs 4mm, 3pcs4.5mm, 3pcs 5mm, 2pcs 5.5mm, 2pcs 6mm, 2pcs 6.5mm, 2pcs 8mm, 2pcs 10mm drilling dia high-speed steel straight shank twist drills, can accommodate a wide range of drilling needs.. Titanium Coated Surface: Made of high-speed steel with titanium nitride coating which can increase the hardness of the twist drill and reduces friction between the bit and the material being drilled. Suitable for use in both handheld drills and drill presses.. High Hardness Drilling Performance: Suitable for hardened materials and hard metals, such as cast iron, malleable iron, aluminum, wood, plastic etc., and also suitable for soft materials. Great replacement for your dull drill bit to improve work efficiency.. Wide Applications: This cobalt twist drill bit is suitable for a variety of drilling applications, including metalworking, woodworking, and plastic fabrication. It is great for use with harder materials such as stainless steel, titanium, cast iron, malleable iron, and other alloys, wood, and plastic, and is well-suited for both DIY and professional use..