Ritchey 4-Axis Adjustable 31.8 Stem - BB Black

All the quality and features of Ritchey's popular, proven stems with angle adjustability. It offers an adjustment range of +/- 55 degrees. Precision 3D-net shaped forged shaft interconnects with a precision clamp to create the strongest, lightest, most secure adjustable stem available. With 4-bolt clamping and stainless steel bolts.
Bar clamp: 4-bolt, detachable
Material: 6061 T6 aluminium
Weight supplement: at 80 mm, manufacturer information