Standard Pack = 1 piece(s). Bar Style = U-Shape; Base Type = Flanged; Fits Spindle Diameter = 1/4-20 IN; Height Under Clamp Arm = 0.98 IN; Holding Capacity = 560 lbs; Mount Diameter = 0.27 IN; Mounting Length = 1.03 IN; Mounting Width = 1.21 IN; Overall Height = 1.95 IN; Overall Length = 8.62 IN; Style = Horizontal Hold Down; Toggle Lock Plus Lever = Yes;