A comprehensive 171 piece set in 1/4'', 3/8'' and 1/2'' drives. This set comes with the following: 1/4"D, 3/8"D, 1/2"D x 72 teeth ratchets 2 x Sliding T bar 1/2"D,1/4"D 4 x Extension Bars 2 x 1/4"D (100mm & 50mm) 1 x 3/8"D, 1 x 1/2"D 3 x Plug...