The DW7232 Miter Saw Stand Material Support and Stop supports work pieces when cutting and can be easily repositioned anywhere along the rail. Features flip-up stops for quick conversion to a cut stop and height adjusts from 3-7/8-inch to 6-inch to match miter saw table heights. Compatible with DW723, DWX723, and DWX724 Miter Saw Stands.
From the Manufacturer
DEWALT DW7232 Miter Saw Workstation Work-Piece Support and Length Stop