Durable Construction: Made of quality aluminum alloy material, lightweight, surface anti-rust and corrosion resistant, strong and durable, long service life.  Secure and Accurate Positioning: These collars provide a secure grip on the shaft, preventing slippage or movement of components. Used for shaft positioning, linear slide stop, and fixing axis of rotation.  Versatile Applications: These collars are widely used across different industries, including automotive, robotics, and manufacturing. They can be used in various equipment and machinery to secure gears, pulleys, sprockets, or other components onto shafts.  Easy Installation: Split collars can be quickly installed or removed by opening the collar and placing it around the shaft, then tightening the screws to secure it in place. Split collars, in particular, have a two-piece design with a gap, making them convenient to install or remove.