Taco Metals Plas Adjustable A-R Clampon Rod holder Adjustable clamp to fit multiple pipe and tube sizes For use on vertical and horizontal pipe/tube Designed to fit 7/8" & 1" O.D. (tube) Clamp adjusts to fit 7/8-Inch and 1-Inch tube Adjust, add or remove easily with a standard Allen wrench Rotates and locks in place Marine grade plastic, color white. Ideal for bow rails