[Self-locking Design]The lynch pin is designed with a self-locking ring, and the spring locking pins are structurally strong, which are very convenient to use and will not loosen during use. [High Quality Material]The locking pin is made of 316 stainless steel, sturdy, durable, anti-rust, anti-corrosion, and not easy to deform. [Easy to Use]These safety hitch pins are super convenient and are small enough to be accessible wherever and whenever you need them. [Wide Application]They are very suitable for table saw, lawn, gardening, farming, truck, boat, trailer or other locking applications. [Quantity & Size]You will receive a package which includes 4pcs lock pins, total length: 40mm; diameter: 4.5mm. Material: 316 stainless steel colour: silver Package Contents: 4 x lock pins 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.