Cable Clamps U-Bolts 50 pcs 3/8" Clamps Steel Aircraft Cable Wire Clip U Bolt Size: 3/8" Cable Clamp Quantity: 50 pieces 3/8" Galvanized Cable Clamps Compare Price: At My local hardware store these are $1.69 each + tax. Shipping Cost: Free Shipping to U.S Drop-forged steel for strength, zinc-galvanized for superior rust & corrosion resistance