Seachoice Hollow Base Cleat 5-1/2" Chrome 50-30301 by Seachoice $16.71 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Seachoice Hollow Base Cleat #50-30301 Size: 5-1/2" Chrome Plated Polished Cast Brass.