ITEM NAME:Bolt On Recessed D Ring Lashing Rings for Trailer Chain Strap Rope Tie Down Description: D Ring Tie Down used on trailer, boat, ATV... Made of stainless steel and plastic, corrosion resistant and durable. D Ring Diameter: Approx. 6.4mm/0.25'' Hole Center to Center: Approx. 31mm/1.2'' Package Includes: 1 Piece D Ring Tie Down SKU: DMO0021923252014214.D Ring Tie Down used on trailer, boat, ATV. 1 Piece D Ring Tie Down. 6.4mm/0.25". SKU: DMO0021923252014214.