4mm - 22mm HSS Step/Cone Drill 2mm Increments - Titanium Coated
4-22mm Metric Step/Cone Drill Bit. Made from high quality HSS steel. Ideal for using to cut varying hole sizes in a variety of materials including steel, brass, wood, plastic,copper, fibreglass and PVC etc. Titanium coated to reduce friction and heat. Each step is clearly labelled with the depth diameter rising in 2mm steps from 4 - 22mm.