The 1/4" Wall Good Retro Roll (ST) measuring 20.750 inches from Precision Pulley, Inc is a high-quality component designed for retrofitting applications. With a wall thickness of 1/4", this pulley offers excellent strength and durability, making it suitable for various industrial uses. Its design ensures compatibility with a wide range of systems, enhancing operational efficiency. Manufactured to meet industry standards, this pulley is a reliable choice for those looking to upgrade their machinery with a robust and effective solution.