Reversible Ratchet Handle is a tool, which has a feature of reversing the direction of operation insitu without detaching the socket. It has a mechanism for both right and left hand operations. It is available in 1/4" (6.35 mm), 3/8" (9.5 mm), 1/2" (12.7 mm), 3/4" (19 mm) and 1" (25.4 mm) square