Non-skid laminate, cut out fits bar racks. Universal Kayak Kit 18": Blocks 3.75in H x 4.75in D x 17.75in W.
Includes: *2) Universal Kayak Non-Skid Blocks (2)Bow & Stern Cam Buckle Straps (2) Block Straps (1 ) Center Strap with Cam Buckle 4 Galvanized Steel S-Hooks