Description hongdui aluminum alloy quick acting hold down clamp t slot t track clamp set with t slot and round hole accessoriesspecification â product namequick acting hold down clampbrandhongduimodel numberb15541materialaluminum alloycolorredmax vertical clamping63 64mmmax flat clamping57 08mmpressure plate width25mmthread sizem8thread length120mmt slot slide size23x8mmround slide sizediameter 30mm and diameter 20mmapplicationhold down clamps t track clamp woodworking table clampfeatures 1 puts clamping pressure anywhere along the flush mounted t slot t track 2 slides into t track and quickly secures with the turn of the hand knob 3 useful in many woodworking and metalworking applications for work holding positioning and fixturing 4 very versatile also perfect for clamping jigs and fixtures 5 2 kinds of sliders to meet different work requirements package included 1xquick acting hold down clamp1xt slot slide1xround platemore details