The precision-engineered seat post clamp from Wolf Tooth secures your seat post while looking great. The M5 screw features a spherical washer and fits a cylindrical counterpart, ensuring that the threads are always perfectly aligned, which prevents slipping and guarantees consistent clamping force. This seat post clamp with quick release, made in our factory in Minneapolis from 6061-T6 aluminum, is available in various sizes and a wide range of colors. Compatibility clamping diameter: 31.8 mm / 32 mm. Frames may slightly vary from the nominal diameters due to tolerances and paint thickness. Clamps fit frames that are within +/- 0.5 mm of the specified size. For example, a 34.9 mm clamp fits frames with a seat tube diameter of 34.4 mm to 35.4 mm. Clamping height: 11 mm. Note: not compatible with Ibis bike frames. Technical specifications: Weight: 19 g, Material: 6061-T6 aluminum, M5 stainless steel screw with integrated washer, tool interface: 4 mm hex key, torque specification: max 6 Nm. Made in the USA.