The SK Hand Tool Fine Tooth Palm Control Ratchets are available in 1/4", 3/8" and 1/2" drive versions and in a three-piece set. This generation of ratchet delivers trademark SK performance and represents the very essence of SK Power and Precision. The combination of a 72-tooth mechanism and a compact ratchet head design delivers the accessibility necessary to fit into the tightest of work spaces, great for inaccessible fasteners that don't have a lot of clearance.