Park Tool FFS-2 Frame and Fork Straightener Adjustable hook accommodates tubes up to 1 3/4-Inch (44mm) in diameter Features over 8-Inch (20.3 cm) of sliding travel adjustment Vinyl coating on the hook and fulcrum pad protects painted surfaces Used to straighten frames, forks, and other components, the Park Tool Handlebar and Subframe Straightener is a versatile and productive tool The open hook design enables it to straighten not only frames and forks, but also cranks and handlebars