General description These 8 pieces of split shaft collars are made from lightweight aluminum, featuring oxidation treatment for enhanced corrosion resistance. They are strong, durable, and designed for easy installation and disassembly, making them ideal for applications requiring frequent adjustments. Technical specifications Material: Aluminum Inner diameter: 20 mm Outer diameter: 40 mm Thickness: 12 mm Package Contents: 8 x Split Shaft Collar Bore Measurement allowed error: +/- 1-3 cm Usage Shaft collars are commonly used as stops or to position and hold timing pulleys and other components securely. Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product.