Worm Gear Clamp #312 611 SERIES 18=20 ID

Worm Gear Clamp, Series: 611 Series, 18 in Nominal, Minimum Clamp Diameter: 18 in, Maximum Clamp Diameter: 20 in, Stainless Steel, 5/16 in Bolt, Number of Bolts: 1, 1/2 in W, 50 in-lb Torque, Additional Information: #312 SAE, 0.190 lb Weight