The Shopsmith MARK V 500 Rip fence upgrade offers t-slot top surface and single lever locking mechanism. \n \nThe convenient t-slot on the fence's top surface accepts our: \nRip Fence-Mounted Featherboard \nFlip-up Rip Fence Stop \nT-Track Utility Light Bracket \nShop-Made Fixtures Using Our Sliding T-Nuts \nThe single, flip-up lever locks both the front and the back firmly to the worktable in one, simple action. Also works with original as well as wider Model 500 extension table. \n \nNote: For MARK V 500's made prior to 1992. Not compatible with the MARK V 520 or 510.