1/4" square drive so will fit any 1/4" drive sockets / extensions etc.... 72 tooth design (5 degree movement). Push button socket release. Total length of the ratchet 85mm 1 X 3/8" Drive Ratchet 3/8"drive so will fit any 3/8" sockets / extensions etc.... Quick release button so the socket does not fall off when using this application. Forward and reverse by a click of a lever on the ratchet head. 72 teeth ratchet so works in 5 degree increments for accurate or use in tight spaces. Total length 104mm 1 X 1/2" Drive Ratchet 1/2"drive so will fit any 1/2" sockets / extensions etc.... Quick release button so the socket does not fall off when using this application. Forward and reverse by a click of a lever on the ratchet head. 72 teeth ratchet so works in 5 degree increments for accurate or use in tight spaces. Total length 140mm