Amazon.com : Jake Sales Cantilevered Gate Rollers, Slide Gate Roller Hardware, for 4" Post, 2-3/8" Chain Link Fence Gate Frame : Patio, Lawn & Garden
American Fence & Supply Co.: 4" GUARDED NYLON CANTILEVER ROLLER
Cantilever Gate Roller 4 inch Square Post, 2 inch Square Frame
Cantilevered Gate Rollers, Cantilevered Rollers, Rolling Cantilever, Slide Gate Roller Hardware, For 3" post, 2-3/8" Chain Link Fence Gate Frame - SET OF 4