Profile Mini Chromoly Splined Driver with Chromoly Cog Size:15t efficient and lightweight the perfect

efficient and lightweight the perfect combination for a top end race fork

accepts 5/16" or 8mm hex wrench

Size: 20" tube to fit tires 1

It's worth noting that the Supreme bar ends are also nice and light too (if that's what concerns you)

JAPANESE SEAMLESS 4130 CRMO TUBING

Profile Mini Chromoly Splined Driver with Chromoly Cog Size:15t efficient and lightweight the perfectThe Profile Mini Splined Chromoly Driver is a replacement driver designed for Profile Mini cassette hubs only. Easily replace your current worn out driver with Profile's chromoly splined driver, this driver comes with a chromoly cog included. Weight: 0. 22 lbs (102g)