Impact Atom Clamp with Ratchet Handle With 1/4"-20 & 3/8" Sockets | Fits 0.59 - 1.37" Pole Diameters Fits Flat Surfaces up to 1.37" Thick | Textured Non-Slip Jaw Ratcheting Handle | Supports Over 15 lbs Weighs only 4.0 oz In The Box: 1 Year Manufacturer's Warranty