This is one of those rare tools so cleverly conceived and so purely functional that all we can say is, "wish we'd thought of it ourselves." The 80-lb. magnet in the base of this feather board sets instantly wherever you need it on any steel surface, and it won't move until you force it to--that magnet is strong! Flexible polycarbonate wings provide plenty of lateral pressure left or right (25 lbs. nominal, though it feels like a lot more to us) and an adjustable, removable polycarbonate hold-down, which can also be mounted left or right, provides firm presure on stock from 1/4" to 2" thick. One or two of these feather boards on your table saw or jointer will improve precision and productivity while greatly reducing the chance of kickback or loss of control. A built-in lever pops the featherboard loose for re-positioning.