Free Shipping! Impact Atom Clamp with Ratchet Handle With 1/4"-20 & 3/8" Sockets, Fits 0.59 to 1.37" Pole Diameters, Fits Flat Surfaces up to 1.37" Thick, Textured Nonslip Jaw, Ratcheting Handle, Supports over 15 lb, Weighs only 4 oz