Cut any threaded 1 18 fork quickly and easily with these handy fork stack cutting guides the park tool sg 2 threaded saw guide is heat treated for long life each guide cleans the freshly cut threads upon removal so headset parts install easily cut as little as 1mm from any fork threads are in the 1 18 x 26 tpi standard park tool sg 2 threaded saw guide features cut any threaded fork steerer quickly and accurately with this handy saw guide you can easily remove a