Foreverbolt FBHCLP20P5 Worm Gear Clamps; Clamp Type: Worm Drive; Minimum Diameter (mm): 1.750; Minimum Diameter (Fractional Inch): 13/16; Minimum Diameter (Decimal Inch): 1.7500; Maximum Diameter (Decimal Inch): 1.7500; Maximum Diameter (mm): 1.75; M