Gate Post Roller - L-shaped post support design, strong and durable, saving lubrication or maintenance. Slide-- prevents sliding gate from falling off the rail. Ideal for your yard fence and garden sliding gate. Gate Assembly Bracket - Application: Electric Gate on Wheel, Sliding Gate Nylon Sleeve Wheel, Iron Gate Wheel, Electric Gate Guide Wheel, Track Wheel, Pulley. Sliding Gate Rollers-- Application: Electric Gate on Wheel, Sliding Gate Nylon Sleeve Wheel, Iron Gate by Wheel, Electric Gate Guide Wheel, Track Wheel, Pulley. Sliding Gate Guide: The bracket can be changed to face up or down according to your preference.