Park Tool SG-8 Saw Guide for Carbon Forks
The SG-8 is built around the same specs as Park Tool's standard fork saw guide with the exception that the width of the saw slot is increased to accommodate the larger carbon-specific blades.
The SG-8 ensures a straight, clean cut on 1" (25.4mm), 1-1/8" (28.6mm) and 1-1/4" (31.75) threadless fork steerer tubes. Also works great when cutting handlebars or other round tubes from 22mm to 33mm using the wider, diamond edge carbon hack saw blades like the Park CSB-1.
The clever design features a extended tab the securely locks in to a vise. Rubber clamp will not mark up or damage the fork when securing the steerer tube in the guide. Clearly the best design to date for cutting steerer tubes and a shop standard by anyone's measure.