PARK TOOL SG-7.2 OS Sawguide

Accurately guides a hacksaw to cut aero-shaped seat masts and seat posts up to 3.5` (89mm), as well as fork steerer tubes and other round tubes from 1-1/4` to 1-3/4` (32mm to 45mm).
Features two different cutting slots--standard and carbon cutting blade widths--in a hardened steel body with molded contact points to protect tubes and frames.