This professional set of bolt extractors is like nothing you have ever used. These grabits will quickly and safely remove all types of bolts and the ease of the use will surprise you. This set will do exactly what you want, they fit deep sockets, quick change chunks and are efficient in time and performance. Contents: 3-6mm           3/32 - 1/4 6-8mm           1/4 - 5/16 8-12mm         5/16 - 1/2 2-18mm         1/2 - 3/4 18-22mm       3/4 - 7/8 22-25mm       7/8 - 1\'\'