This is the Singer type plastic darning foot. It is used for free hand embroidery, quilting (stippling),and monograms. (# 161876)
Atlas
Atlas Deluxe
Babylock
Bernina Brother
Consew
DeLuxe
Domestic All Dressmaker
Elna
Elntia
Euro-Pro
Jaguar
Janome / New Home
JC Penney
Necchi
Nelco
Pfaff
Riccar
Sears
Simplicity
Singer
Sonata
Viking
White
Yamata
and more!