1. 2 Pack Conveyor Belt Roller Materials: Conveyor belt replacement rollers are made of solid stainless steel material, which is waterproof, rustproof and will not deform. They can be used to transport goods of varying weights up to 90 lbs. 2. Smooth And NoiseFree: The rollers are made of highdensity and highstrength round steel, which reduces friction, ensures smooth roller rotation without jamming, improves the stability of the conveyor, and runs smoothly and quietly, providing a more comfortable experience for your working environment. 3. Wide Usage: This conveyor belt roller can be used as a woodworking roller frame, saw frame, material frame roller, marine roller, dock roller, kayak loading and unloading roller, sport bike tire roller, conveyor tape roller roller's roller or conveyor replacement roller. 4. Easy To Install Spring Mounting: Push the spring in or pull it out from the other side to securely install the roller into the conveyor frame. With the roller's builtin spring, these replacement conveyor belt rollers ensure more convenient installation and disassembly, saving you unnecessary time and effort.