Standard Pack = 1 piece(s). Bar Style = U-Shape; Base Type = Flanged; Fits Spindle Diameter = 5/16-18 IN; Height Under Clamp Arm = 1.32 IN; Holding Capacity = 840 lbs; Mount Diameter = 0.27 IN; Mounting Length = 1.03 IN; Mounting Width = 1.21 IN; Overall Height = 2.2 IN; Overall Length = 9.88 IN; Style = Horizontal Hold Down; Toggle Lock Plus Lever = No;