The Extension Table for Singer Heavy Duty machines 4411, 4423, 4432, 4452, 5511, 5523, 44S, and 6335 is a high-quality sewing machine accessory designed specifically for Singer brand machines. This unit is a perfect addition to your Singer sewing machine, providing extra workspace and stability during use. With compatibility for various Singer models above, this extension table offers convenience and versatility for all your crafting needs.