Check the listing for details. 4" Square Post x 2" Square Gate Frame Premium Nylon Cantilever Roller. Condition: New. Listed at 98.52 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" Square Gate Frame Premium Nylon Cantilever Roller Model: HD4S2S Key Features: Shaft Size: 1" Wheel Size: 7" diameter Designed to fit 4" square posts and 2" square gate frames This nylon roller is quick and easy to instal 4" Square Post x 2" Square Gate Frame Premium Nylon Cantilever Roller Product Details Product Details This square nylon cantilever roller 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. This cantilever roller features double sealed bearings for extended life and is designed to fit 4" square post sizes and 2" square gate frames. No greasing required! Standard use requires 4 per gate.