feet kit has a set of four feet. One standard ruler foot gives 1/4-inch distance from the needle to the edge of the ruler foot.The other three feet provide a 3/8-inch interval, a 1/2-inch interval, and a 3/4-inch interval. Each set has 3 feet of different hole sizes: 1.5mm, 2mm and 3mm for different yarn sizes. Couching Foot Free motion Presser Foot has two square ruler foot,one is 1/4-inch distance from the needle to the edge of the ruler foot,another is 1/2-inch distance from the needle to the edge Total you'll get 9 pcs Clarity Clear Couching Threads Yarns Feet The shank is 5/8inch,thick is 3/16 inch,It Fits Most of Low Shank Sewing Machine.Fits Low Shank Sewing machines, including Low Shank for , for , for , for , for , for Singer, for , for , for , for , for White, for Simplicity, for , etc. Type: presser foot For: Sewing Machines Colour:Transparent Material:plastic Package Contents: 9 x Presser foot Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.