These alloy clutch and motorbike brake levers are modeled after the old Amal type. They each have a cable adjuster, and will accept cables common with Triumph, BSA, Norton and other motorcycles with 7/8" bars such as Yamaha xs650 and Honda cb750, etc. These are very nice and simple and feature a two screw clamp that is hidden underneath the bar for a clean look. I have run a set of these on my BSA since I built it and they work and look great.