Don't Settle! At Guardian Filtration Products, we don't. We know you have choices when shopping for pool and spa filter cartridges and maintenance parts. Our goal is to provide the highest quality products at the best prices. We are an American company based in Greenville, PA and have been here since 2003. We manufacture direct replacements for popular brands and sizes in the pool/spa filtration and maintenance parts. This Wheel Screw is designed to be a direct replacement for the following parts: EC55 scr wheel 5pk lc55 llc55; lxc55 The dimensions are: Height: 0.80 Width/Diameter: 0.80 Length/Diameter: 0.80