Table Saw Left-Side Support Extension For Use With Bosch Mfr No 4000 4100 and GTS1041A Table Saw Length 12 in Width 21 1/2 in Height 1/8 in Material Aluminum Features 5 mm Hex Wrench And Needle Nose Pliers Needed For Installation Extends Table Additional 12 in For Working with Wide and Long Pieces Stores When Not In use Includes Side Support