Singer sewing machine small bobbins fits Adler 30-1
Also, All 29K Class small bobbin machines.
29K1 29K2 29K3 29K4 29K10 29K11
29K12 29K13 29K14 29K15 29K16
29K17 29K18 29K21 29K22 29K23
29K32 29K33 29K51 29K53 29K56
29K58 29K62 29K71 29K73
29K171 29U171A 29U173A
