Janome 9mm Dual Feed 1/4" Quilting foot fits MC8200, 12000 & Others On the interchangeable feet for the AcuFeed Flex Twin holder, the 1/4" foot OD, sometimes referred to as the Quilt Piecing foot is a quilter's dream. It has a built-in flange to keep your seams right at the 1/4" all the way around. Clips onto dual Acufeed foot holder which comes with your machine. Use with Janome models: MC8200, MC8900, MC12000 Horizon, MC15000 Horizon and Elna model EL900 eXpressive.