The proven 2-bolt design on this classic provides a class-leading balance between strength, weight and adjustability. The two-bolt design is easy to adjust and holds tight. Its low profile clamp reduces stress on lightweight rails and won't bottom out, and the bolts are oriented to the axis of the rails for greatest contact area with the saddle. Features: Low profile clamp reduces stress on saddle rails Simple 2-bolt design is easily adjustable 3D forged 2014 aluminum shaft & head 38mm rail clamping area Specifications: Diameter: 27.2mm or 31.6mm Length: 350mm Offset: 25mm Material: Aluminum Color: Hi-Polish Silver Weight: 245g (27.2 x 350mm)