Magswitch Vertical Featherboard Attachment with risers. For use with both the Pro Table Featherboard and Reversible Featherboard of the Magswitch Workholding System (each sold separately). This award wining "Top Tool" Offers extra safety against kick back with vertical hold down. Use riser blocks when featherboard is used for horizontal stacking (to create single or double stackable Featherboard for tall pieces). Reversible along with the Reversible Featherboard of the Workholding System.