The 45-29559 - Chuck Insert Clear Flat 40 Duro is designed for optimal grip and durability in various industrial applications. With a hardness rating of 40 Duro, this insert provides excellent flexibility and resistance, making it ideal for use with chuck capping systems. Its clear flat design ensures a smooth and consistent fit for precision operations. Perfect for regular maintenance or upgrades, this high-quality insert helps maintain peak performance in your capping machinery.