Amarine Made Stainless Steel 316 Bow Anchor Roller - Fixed-02204s Manufactured from 316 grade stainless steel. Black nylon roller to prevent chafing of the rode. Spring loaded pin to retain anchor and rode. Base length 3-4/5 " / 96.5mm , Overall length 7-7/10" / 195mm Width 2-3/5 " / 68mm Height 2-4/5" / 72mm Mounting hole size 1/3" / 8mm