The OneUp Stem can be used with a regular star nut and top cap like every other stem. It&&';;s also compatible with existing threaded EDC top caps, for people who&&';;ve already threaded their steerer tube. Compatible with cables exiting underside of the OneUp Carbon E-Bar. SPECS Length: 35mm (155g) / 42mm (163g) / 50mm (173g) / 35mm Dia. / 0Adeg RiseColor: Black. Stack Height: 39mm Bar Clamp Width: 55mm Material: 6061-T6 Aluminum Need help choosing the perfect length stem? Check out our stem length blog to dial in your fit! INSTRUCTIONS 1) Install bar. Top bar clamp bolts tighten down to stem body with no gap. Bottom bar clamp bolts will have a gap. Torque bolts to 6Nm 2) Install stem onto steerer, align and tighten top 2 steerer bolts (9Nm).