Slik Pro 400DX Tripod Legs, with 3-Way, Black - SLI00013 MODEL NO 400DXProduct Highlights Head mounting screwCorresponding to both U1/4 and U3/8 head mounting screws.3-steps leg angle adjustment3-steps leg angle adjustmentLeg angle adjustable from a high position to a low position.Lever-type leg lockLever-type leg lockRobust leg lock system that can operate quickly and easily.