Eazypower's Isomax drill bits are designed for use with both rotary and impact screwdriving tools for various drilling applications in wood, composites and softer metals, including aluminium, copper and tin. These jobber drill bits are capable of removing broken or twisted screws / bolts and drilling pilot holes for screw extractors. These high-speed steel drill bits, with longer lengths as compared to the diameter, offer increased cutting speed and heat resistance. These industrial-grade jobber drill bits are available in different bit diameters, lengths and shank sizes on Raptor Supplies.