Irwin 5 Piece BOLT-GRIP™ Bolt / Nut Remover Expansion Set 10504635 394002

Set comprised of five bolt grippers with a reverse spiral flute design to securely grip and remove stubborn rusty or painted nuts and bolts. This set completes the base set (394001). 
Contains sizes: 5/16" & 8mm, 10mm, 13mm, 11/16" and 3/4" & 19mm. 
Drive: 3/8" square drive. Hexagon flats so can be used with spanners and wrenches too.