A must for strut nut removal and installation. Four double-ended drivers fit most MacPherson strut applications. Drivers hold strut piston rod while deep socket is used to remove nut.. Includes Hex Adapter , 15/16" x 7/8" Socket and the following drivers : T50 Torx & Double d ( 9.5mm x 12.70mm) , 7.5mm Hex & Double D (6.74mm x 9.92mm) , 6.5mm Hex & Double D ( 6.35mm x 7.58mm) , 10mm Internal Hex & Double D ( 9.5mm x 11.1mm)