The Gitzo GS5370LC Long Quick Release Plate is a 5.5" long plate that comes supplied with two 1/4"-20 and 3/8" screws each, plus a video pin. Having two screws available for each size provides a distinct advantage for heavy equipment or longer lenses and scopes. This is a "C" type plate, and is compatible with all current (as of 7/08) heads, except for the Off-Center Heads. It is also compatible with the G2285MB and GS3760C quick release adapters. Its screws are made of high quality steel.