Precision diamond knurl pattern for a surprisingly comfortable grip and adds a great custom look to your bike at the same time. Super clean and low profile design features all CNC machined billet aluminum construction throughout.; Chrome finish Fully CNC machined 6061-T6 billet aluminum construction 3" diameter, 1/4" thick at the edge, and 1/2" thick Easy installation Uses all the stock gas cap components High quality gas cap base has vented right-hand threads