Seachoice Center Guide Keel Roller 8"x5/8" Yellow 50-56420 by Seachoice $28.80 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Seachoice Center Guide Keel Roller #50-56420 SIZE: 8" x 5/8" Non-marking TP yellow rubber.