VE-VE Inc. 47" / 65" Boat Trailer Post Guide-On, 1 Pair (Galvanized Finish Available!) Pair of 47, Zinc Plated, Boat Trailer Post Guide-Ons ( AMERICAN MADE ) 40 tall gusseted steel tube weldment with 40 PVC tube cover that sets on ring base. Adjustment out to 14 each side on 2 wide frames ( 13 on 3 W. frames ) Complete with mounting hardware to fit frames up to 3 W. x 4-1/4 H. Zinc Plated finish ( For FRESH WATER use )!