Park Tool  SG-7 Oversized Adjustable Saw Guide

Accurately guides a hack saw to cut steerers, integrated seat posts and even airfoil shaped seat posts up to 3.5” (89mm) or round tubes from 1-1/4” (32mm) to 1-1/2” in diameter (45mm). The SG-7 features a hardened steel body and molded contact pads to protect tubes and frames.