-Precision CNC machined
-Sealed ball bearing virtually eliminates friction
-Plastic plug on end to prevent glue and dirt from getting in the bearing
-Knurled finish to provide a solid bond between tube and grip
-Other handlebar brand inserts available
-Twister Throttle Tubes are compatible with all Pro Taper handlebars and Renthal 7/8" handlebars with the standard bearing insert

ProTaper Beta 2-stroke Twister Throttle Tube
Produced by ProTaper of USA