High-Strength: Shaft locking pin is made of carbon steel and has solid strength. : Wire lock pin has a zinc-plated outer layer, rust and . Stable: The semicircular clip of safety coupler pin is made of spring steel, which has good toughness and not easy to fall off after locking. Widely-Used: Trailer coupler pin can fit various trailer couplers, agricultural equipment, yard tools. Product: Shaft Locking Pin Pin type: Coupler Pin Diameter:8mm Length: 70mm Colour:silver Material:Metal Package Contents: 4 x Shaft Locking Pin Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.