Foot operated pump. Easy to use spring loaded release lever. 5" x 1-12" polyurethane casters with locks. Specs: Table Size: 19-1/2" x 32"; Lowered Height: 11"; Raised Height: 35"; Capacity: 700 lbs.; Overall Dims.: 37"H x 42"L x 19-1/2"W; Weight: 165 lbs.