Reversible for easy on and off application. 12 point heat treated box ends. Reusable storage rack. SAE sizes: 1/4 x 5/16", 3/8 x 7/16", 1/2 x 9/16", 5/8 x 3/4" & 11/16 x 7/8". 1/4" is 6pt. Reversible for easy on and off application.