This kit has everything to ensure that your kayak is mounted extra securely. Features No?Skid anti?slipping blocks for use on vehicles without racks. Compatible with Yakima and Thule crossbars. Kit Includes: - Two 14 No?Skid blocks - One 15 heavy duty utility strap - Two 15 bow and stern tie-down straps - Two 9 block straps - Four bumper hooks.