This kit is made up of a set of cleverly designed hexagon bolt and nut extractor adaptor caps.

This kit is made up of a set of cleverly designed hexagon bolt and nut extractor adaptor caps. The caps fit over the rounded off fixing and allow a standard 12 point socket or ring wrench to be used to remove the rounded off hexagon fitting.> Sizes: 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm.> For use with 12 point sockets and wrenches.> Specially hardened steel components finished in black.> Can be used on up to 65% rounded nuts.> Due to material used, the tools should be considered consumable. Following the instructions for use will help significantly increase the service life of the kit.The ""rounded-off"" nut or bolt is the scourge of the mechanical workshop. Particularly on exhaust components, a corroded and seized nut or bolt defies all attempts to remove it, and if using a spanner or ill-fitting socket, the flats of the fastener soon get rounded-off, making things worse. What to do?Well, you could get out the angle grinder or better still, reach for this ingenious new Damaged Nut/Bolt Extractor Set. These specially hardened caps fit over the rounded off fixing and allows a standard 12 point socket or ring spanner to be used to remove the rounded off fastener. The extractor cap grips and moulds itself to the rounded-off fastener and keeps on gripping until it loosens off.