Check the listing for details. 4" Square Post x 2 1/2" Round Gate Frame Nylon Cantilever Roller Gate Roller. Condition: New. Listed at 98.69 USD. All Products | DF Supply, Inc. Product Information " alt="" /> " alt="" /> " alt="" /> Click on the Image to Enlarge zoom_in " alt="" /> " alt="" /> " alt="" /> 4" Square Post x 2 1/2" Round Gate Frame Nylon Cantilever Roller Gate Roller Model: HD4S212R Key Features: Shaft Size: 1" Wheel Size: 7" diameter Designed to fit 4" square posts and 2 1/2" ( 2 3/8" OD) round gate frame This nylon roller is quick and easy to install 4" Square Post x 2 1/2" Round Gate Frame Nylon Cantilever Roller Gate Roller Product Details Product Details This 4" Square Post x 2 1/2" (2 3/8" Actual OD) Round Gate Frame Premium Nylon Cantilever Roller For Sliding Gates is a state-of-the-art way to open sliding chain link gates. This nylon roller enables you to open your standard gates with ease. It also alleviates the stress on your gate opener, allowing for a quick and smooth opening.