Feature: 1. Clamp Collar: Fixing the parts by clamping while causing no damage, the fixing mechanism for components and high load shafts are are completely independent to each other. 2. Safe Working: The increased contact area between shaft and centre hole has also improved the clamping and pressing force, providing greater support against heavy radial loads and reducing the distortion. 3. Double Split: With one clamping bolt on each side, a balanced 2 bolt setup will create a balanced and firm clamping force on the shaft to ensure that rotating shaft mounted components do not move or loosen. 4. Smart Design: Balanced in weight and volume based on the centre hole ensure stable working under high speed. Also, the the clamping length of this high load shaft collar is much longer. 5. Wide Utility: Able to fit into hard to get grooves, you can freely fasten the shaft clamp to the gear, sprocket, pulley or wheel first before tightening the assembly to the shaft during installation. Specification: Item Type: Clamp Collar Material: Aluminium Alloy Model: 3310-0016-0250 Centre Hole Shape: Round Centre Hole Diameter: 1/4in Thread: M4 Purpose: Connect the shaft column by clamping without causing any damage to the fixed parts. . Package List: 2 x Clamp Collar Note: Before installation and use, you need to match the appropriate designed size.