This product is a convenient and practical rollers, made of sturdy and durable nylon and steel material, safe to use and excellent in texture. The reasonable design makes it have a wide range of use. This product is suitable for gate assembly support. Features -Color: Golden. -Material: Steel, nylon. -Size: About 15.50X6.00X4.30cm/6.09X2.36X1.69in. - Slide gate guide roller with L post bracket works on most slide gate types and fences. - Our nylon guide wheels are made of nylon materials, which is high density, strong toughness and not easy to deform. - Wear-resistant and high . Easy to install on the post wall. - Great for your garden sliding gate and yard fence. Enhances and prevents the slide gates from falling . - Application: Electric door on the wheel, sliding door nylon sleeve wheel, iron door by wheel, electric door guide wheel, track wheel, pulley. Package list: 1 Bracket Guide Roller