Professional tool for commercial or occasional use This items removes studs or reinstall them without damage to the stud thread. Set Includes; sizes: M6 x 1.0mm M8 x 1.25mm M10 x 1.25mm M10 x 1.5mm This is an 8pc kit and the sizes above are doubled one set for removing and one set for installing. Supplied in a blow molded case ideal for storage and transportation. Comes complete with a full set of instructions for easy use.