Oberon Lever Guards (also known as Lever Protectors) offer protection to the brake and clutch levers, either from another rider or machine, as well as minor crashes. The 30mm "Dropped" offset for hand clearance allows the rider full throttle control without interference when hanging off the bike. The fully radiused edges to reduce chances of snagging your glove. Angled inwards to alleviate the spearing action of straight brake protectors. Outer blade machined from engineering grade plastic. This is extremely tough with a little bit of give to help absorb impacts. 40mm of adjustment offered to fit around various lever styles. Mandatory for numerous race classes around the world. Mounts to handlebars & clip-ons using various size collets & adapters. Expansion Collets: 14/16/17mm or 18/19mm collets Adaptors: M12 Hardware for BMW S1000RR and RnineT