Park Tool's Frame and Fork Straightener is a versatile and productive tool. Its open hook design enables it to straighten not only frames and forks, but also cranks and handlebars and it features vinyl coating on the hook and fulcrum pad to protect painted surfaces. The FFS-2's hook offers 8 inches of fore-aft adjustment and can fit a frame or fork tube of up to 1-3/4 inches in diameter.