Product Description ALPHA 5pc COBALT LEFT HAND DRILL BIT SET9COL-SET5 These uniquedrill bits are used with your drill operating in reverse andare designed to aid indrilling out broken and sheared bolts and studs. The reverse drilling actionquite often willremove thebroken bolt or stud on its ownwithout having toresort to using an easy out or extractor thussaving you time and effort. Left hand Drill bits are very popular in the automotive, mechanical and farming industries and are a very handy set to have in the workshop Made from Cobalt High speed steel these bits will even steel and stainless steel The set comes packed inplastic case making them compact and saving you space in your toolbox FEATURES & SPECS Split point machine sharpened to reduce bit wander. Black finish Sizes: 5/64″, 7/64″, 5/32″, 1/4″ & 19/64″ 135 split point for extra gripping power Fully ground HSS Cobalt increases strength & drill life For the removal of damaged screws, stud & bolts. Left hand drill bits remove fasteners or creates the pilot hole required for a screw extractor. If the LEFT HAND DRILL does not remove the fastener, the hole drilled becomes the preparation for a screw extractor. The opposite direction flute enables the broken fastener to be gripped and wound out of the hole. The opposite direction flute permits reverse drilling, which stops the fastener being driven tighter.Ensure drill is run in reverse