Widely suitable for reversing railings, yard gates, sliding doors, rail doors, etc. Easy to install and use. Can bring you great convenience. Sturdy steel and nylon materials, wear resistant. Stable and sturdy bolt allows durable fixation and not easy to loosen. Features - Color: Yellow -Material:Nylon and steel - Size: 7.50X3.00X3.00cm/2.95X1.18X1.18in - Durable & efficient: sturdy and durable pulley with a , bring you great convenience. - Easy to install: simple application method, you can easily install and remove these guide rollers. - Low noise slide: the guide rollers can prevent the sliding gate against tipping and ensures silent and smooth sliding. - Rust proof: special treatment, makes these guide rollers durable and wear resistant. - Wide applications: suitable for various sliding doors including gates, indoor room doors, garage doors, etc. Package list: 4 x Sliding Gate Rollers