SeaLux 15-1/4" Stainless Steel Universal Boat Anchor Roller Mount Davit for 3/8" chain SeaLux 15-1/4" Universal Anchor Roller Mount Davit with 4 x 3/8" mounting holes Made of 304 Stainless Steel with Electro-polished stainless steel These anchor rollers are suited for Danforth style, fluke-type lightweight anchors, as well as Delta style plow anchors. For Fortress anchors through FX-23 and Danforth to 13 lbs, Bail holds line up to 1" diameter and chain up to 3/8" Flared mounting tips help eliminate chafe Ideal for small boats. They are designed to mount and stow the anchor while cruising or at dock.