Paralign Feather Boards Single Pack for use with router tables, shapers, band saws and table saws.This feather board features an innovative design that allows you to adjust parallel to your work while remaining clamped to your table or fence.No more trial and error trying to adjust your feather boards correctly.With the JessEm Paralign Feather Boards just loosen the two adjustment knobs and slide them to the correct position while they remain parallel to your work.FEATURESTwo additional knobs allow you to make quick and easy height settings for different material thicknesses.Once set in position, Paralign Feather Boards remain parallel to material while changing the setting.Feather tips molded with rounded edges and are perfectly flat so they won t mark your material.Single pack includes hardware for 3/4in miter slot and standard 1/4in T-Track.