Description from the Velo Orange website:

A simple, polished, all-silver threadless stem with a 26.0 clamp diameter. It's flippable to really dial in your fit. Available in 6 and 17 degree rise/drop in a variety of extension lengths. 4 bolt handlebar clamp. Length is measured center-to-center along extension.

Specs:

• Handlebar Clamp: 26.0mm
• Steerer Clamp: 1-1/8"
• Stack Height: 40mm
• Weight: 140g (100mm size)