The Viper Scale Racing Billet Delrin T-Boss is for most inline motor HO slot cars and is great for replacing a worn or wobbly stock gear boss. This precision CNC machined T-Boss keeps gear mesh true & consistent which results in faster lap times, less wear & tear and cooler running temps. The inner hole is made to press fit onto a .059" diameter axle.
Includes: 1 - T-boss.
Note: Recommended for ages 14 to adult.