Inside & Outside Presser Foot Set With Spring Loaded Center Guide For Industrial Double Needle Walking Foot Sewing Machines. These sets of double needle feet with spring loaded center guide facilitate straight sewing along a center seam with equal distance stitching on both sides of the seam.The adjustable spring loaded center guide is always in contact with the material even when the walking feet go up. The stitching will always be even. sets Outside & Inside Feet for Brother, Consew, Highlead, Juki, Mitsubishi, Seiko, Singer, Tacsew, Artisan, etc. These high quality presser foot sets are available in following sizes (distance between two needles). Size : 1/4" Size : 5/16" Size : 3/8" Size : 1/2" These foot sets will fit double needle industrial sewing machines including : BROTHER : LT2-B838 CONSEW : 339, 339RB, 369RB, 389RB JUKI : LUH-521, LUH-526, LU-1560, LU-2260 MITSUBISHI : DU-122, DU2-420 SINGER : 112W139, 212W139 And many more!