[Precision Axle Compatibility] Engineered fit for M10x1.0 solid axles to seamlessly fit standard bike frames and trailers. Eliminates compatibility concerns. [Anti-Lock Upgraded Design] Features interlocking teeth mechanism to prevent loosening during rides. Superior safety compared to conventional smooth adapters. [Critical Clearance Extension] Adds 15mm+ hitch-to-tire spacing, preventing collisions during turns and stops. Ensures tire-coupler separation for stable towing. [Tool-Free Adjustable Installation] No tools required – installs in less than 60 seconds. Three nylon spacers allow customization for diverse axle configurations. Color: Silver Material: Stainless Steel Package Contents: 1 x Bicycle Trailer Axle Adapter Kit Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement allowance is +/- 1-3 cm.