Pack Size-- Package included 6pcs D Ring Patches. PVC patch diameter 4.33 (11cm), Width inside D-Ring 1.2 (3cm). Kindly note that delivery comes without glue. Welded PVC Construction-- Built super tough with multiple layers of PVC-coated material securing the stainless steel D-ring. This material is then welded to a PVC patch to create a seamless unit; stainless steel D-ring for long term corrosion-resistant service. Highlights-- Add extra tiedown points to your inflatable SUP board or other PVC-coated boat or gear with these reinforced PVC D-Ring patches, making it easier to tie gear in a raft or canoe or to add grab lines for safety. Features-- These patches are strong, easy to apply, and are commonly used by whitewater rafting outfitters to attach a variety of gear to their boats. Wide Applications-- Suitable for PVC inflatable boat, Raft, Dinghy, Kayak, Canoe, Surfboard, Stand Up Paddle Board, etc.; Used for rescue rope, bailer, cargo, thigh straps.