Precision Brand 33030 Worm Gear Clamps; Clamp Type: Worm Drive ; Minimum Diameter (Fractional Inch): 5/16 ; Minimum Diameter (Decimal Inch): 0.3125 ; Maximum Diameter (Decimal Inch): 0.8750 ; Maximum Diameter (Inch - Fraction - 4 Decimals): 7/8 ; Ban