Bow Roller for bow plank mounting #90114. 18.5″ Length | 4.5″ Width. Solid 316L Stainless Steel 4mm Thick sidewall with Mirror Polished Lip w/Logo. Self-launching and self-adjusting. Sized for easy installation on most bow pulpits/bow planks. Best suitable with the Bruce, Shark, Delta & most Holding anchors. Equipped with high quality Delrin® rollers and made using high polished, 316L Stainless Steel.