The Bow Products XT1 Feed Supports are designed exclusively for use with the Bow XT XTENDER Fence (#76195, sold separately). Once installed, you'll enjoy much better material support on small table surfaces such as portable saws and bandsaws, providing enhanced feed control. The supports slide into the bottom T-slot of the XT Xtender fence, which levels them with the saw's tabletop. You can set up one Feed Support on either side of fence, or position both at the infeed end or outfeed end, depending on how you have your fence set up. The Feed Supports feature beveled edges to help prevent material from catching. The bottom of each Feed Support houses a cavity (1-9/16'' x 3-9/16'') that can accept a 2x4 support, if additional stability is necessary for heavier material.