Step/Cone Drill Bit 4, 6, 8, 10, 12, 14mm Hole
4-14mm Step/Cone Drill Bit. Made from high quality HSS steel. Ideal for using to cut varying hole sizes in a variety of materials up to 4mm thick without changing the drill bit, 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.