Designed as an External Snap Ring to secure components on shafts, reducing lateral movement. Key specs: 4.40 mm radial width, 2.50 mm width, fits 40 mm shaft diameter. Additional specs: 37.50 mm groove diameter, 2.65 mm groove width, 36.50 mm free internal diameter. Made from high quality general steel. Zinc finish for enhanced corrosion resistance and durability.