RIDGID® Swivel Nut Assembly, For Use With: Model BC-210, BC-410, BC-510, BC-610, BC-810, BC-210-P and BC-410-P Bench Yoke Vises, Model BC-210A, BC-410A, BC-510A, BC-610A and BC-810A Bench Chain Vises, TRISTAND® Model 425 Chain Vise and TRISTAND® 460 Chain Vises