Home Furniture & Seating Seat Hardware Jon Boat Adjustable Seat Clamp with Swivel Springfield Marine Jon Boat Adjustable Seat Clamp with Swivel $73.99 Jon Boat Adjustable Seat Clamp with Swivel quantity Add to cart Product Details Product Details Mild steel with an E-coated finish. 7″ x 7″ swivel with a 4-hole mounting pattern. Adjustable seat clamp to fit most bench seats. Adjusts from 8″ to 20-1/2″. Display package. ABYC Class: (B) H-31 Fishing Only.
