Product Name: Kayaking D Type Buckle Material: nylon+304 stainless steel Specification: 4.9*3.4 CM/1.92*1.33inch Weight: 72 grams Ideal for seat backs, leg straps, paddle ropes, deck rigging, deck rubber bands and rescue deck lines. -D-ring should be used with M6 screws. -Use this item with a belt to catch oars or other items that need to be secured on the boat. -Using fine craftsmanship and exquisite design, the rotatable ring is convenient for hooking -Made of high-quality plastic, stainless steel, strong and durable. Made of high quality plastic, 304 stainless steel, durable, strong, corrosion-resistant. Using fine craftsmanship and exquisite design, the rotatable ring is convenient for hooking. Ideal for seat backs, leg straps, paddle belts, deck rigging, deck bungee jumping and rescue deck lines.. Easy to use: Use this item with a belt to catch oars or other items that need to be fixed on the boat. Package includes: 6 Sets Kayak D-ring shackle kit (D-ring + screw)