In your busy workshop there are countless ways for threads to get damaged: knocking a track rod end with a hammer; cutting a bolt or threaded rod to length; driving a driveshaft out of a hub — the threaded ends get torn & squashed. Wheel studs get damaged just by removing & refitting the wheels… Luckily there is a quick & easy solution from Laser Tools: the external deburr & chamfer tool! The chamfer tool is designed to be used with an electric drill & is fitted with a 1/4" quick-chuck shaft, maximum recommended speed is 400rpm. The tool is fitted with three super-hard High Speed Steel blades that make light work of repairing damaged bolts & damaged threads. The blades cut quickly & cleanly & are effective on stainless steel, hardened steel, mild steel, copper, brass, wood, fibreglass, & even hard plastic. Bolts, studs & threaded rod, size range from 3mm right up to 19mm. Hammer-damage or squashed & flattened threads will stop the retaining nut or wheel nut screwing back on; a couple of zaps from the deburr/chamfer tool solves the problem instantly. Cutting steel or copper pipe can leave an uneven edge that can stop an olive or tube nut being slid on. A gentle touch with the tool leaves a nicely chamfered edge, & the olive slides straight on.