Ultimate Strength & Security：YiaChuii Bolt-On Forged D Ring with reinforced 6mm plates, our D Rings Tie Down Anchors deliver a staggering 12,000 lbs break strength to secure heavy machinery, trailers, and cargo. The extended 3.15" G5-grade bolts and square-neck design prevent rotation under extreme loads, ensuring unmatched safety for tractors, off-road vehicles, and industrial hauling Corrosion-Proof Durability：The 1/2-inch D-rings are triple-protected with electroplated zinc base + anti-rust coating + powder coating, fearless of sun exposure, salt water and gravel abrasion. Long-term use on boats (kayaks/yachts) and rugged terrain without rusting and consistent structural strength No welding expertise needed：1/2'' Trailer D Rings Pre-drilled 1/4" holes and included 3.15" domed bolts + nylock nuts allow quick mounting on wood/metal surfaces. Square neck bolts lock securely into backing plates, eliminating slippage during transit—perfect for DIYers and professionals alike Multi-Scenario Versatility：From enclosed trailers/RVs to warehouse rigging, these Heavy Duty D Rings adapt seamlessly. Compatible with straps, chains, and winches for cargo, motorcycles, ATVs, or garage storage. Reinforced square holes ensure 360° rotation-free anchoring across industries Complete Kit & Three-year Warranty：Each set includes Tie Down Bolt-On D Rings, corrosion-resistant bolts/nuts, and thickened steel plates. Backed by 30-day hassle-free returns and lifetime technical support—we guarantee every anchor meets MIL-SPEC standards This trailer tie down ring has a high strength heavy duty construction for safety and durability. The D ring is a super heavy-duty anchor point for your trailer or truck. The trailer anchor point is secure and durable enough for heavy cargo.