STRAIGHT SHANK TWIST DRILL
Straight shank twist drills can be clamped on manual or electric hand-held drilling tools or drilling machines, milling machines, lathes and even machining centers. It can drill holes in wood, metal (iron, stainless steel, copper, aluminum, gold, silver) and plastic.
When using manual drilling, you need to pay attention to adjusting the drilling speed. If the drilling speed is too fast, the drill bit is easily damaged, so it is important to control the drilling speed. The larger the drill diameter, the slower the drilling speed requirement.
Diameter:2.5mm Max rotate speed:1400-1800 Rpm
Diameter:3.5mm Max rotate speed:1000-1400 Rpm
Diameter:4.0mm Max rotate speed:800-1000 Rpm
Diameter:5.0mm Max rotate speed:700-800 Rpm