Bordo Cobalt Step Tip Drill and Accessory Set 2012-S1Bordo Metric Cobalt Step Tip Drill And Accessory Set Bordo Metric Cobalt Tough HSS Co5 Step Tip Extreme Performance Drill. Super fast drilling in ferrous & non ferrous metals and all timbers. Suits: Impact rated, they are suitable for use in cordless drills and impact drivers. Step Tip negates the need for a pilot drill in metals and provides extreme drilling speeds in ferrous and non ferrous metals & all timbers. 1 4 hex shank is ideal for use with