These lever guards protect your handlebar control levers from being engaged accidentally by very close contact with immovable objects (like other bikes on a track day). But they also supply a bit of racer style to your bike too. Universal fitting Unique Oxford design Lightweight CNC alloy construction 12-18mm diameter Fits 22mm diameter handlebarsYou can convert these lever guards to full handguards by adding the hand guards (OX702) which are available separately.