Bernina Sewing Machine Number18 Foot - Button Sew-On foot
This foot makes attaching buttons using a Bernina sewing machine as easy as stitching a simple zig-zag stitch.  
Original Bernina Part I like this foot better than the one Bernina is currently making

New Style Foot:

- Virtuosa (150, 153, 155, 160, 163)
- Activa (125, 130, 131, 135, 140, 145, 210, 215, 220, 230, 240)
- Aurora (430, 435, 440, 450)
- Artista (165, 170, 180, 185, 200, 630, 635, 640, 730)
- 3 Series (325, 330, 335, 350, 380)
- 4 Series (435, 475, 480)
- 5 Series (530, 535, 540, 550, 560, 570, 580, 590)
- 7 Series (710, 720, 740, 750, 765, 770, 780, 790)
- 8 Series (820, 830, 880)