Part Number - H02-0022A
This is a 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.
And many other comparable double walking foot machines.
Presser Foot Shank Type: Double Needle
Presser Foot Type: Double Needle Walking Presser Foot With Center Guide