Thrashin Supply Co Throttle Tube For Harley Softail / Touring Upgrade from stock plastic to the Thrashin Billet Throttle Tube, designed with Ptfe inserts for flawless operation and a knurled texture that's ideal for fitting moto-style grips. Features: 6061 billet aluminum construction Low friction Ptfe inserts on both ends Knurled surface locks grips in place Fits 1 OD handlebars