This listing is for a Special LEFT TOE SMOOTH BOTTOM WELTING FOOT SET 

The inside foot has a special split toe and a groove cut into the bottom.

this foot are also compatible style walking foot machines including : 

for ARTISAN : 618-1, 4400RB 

for BROTHER : B837 

for CONSEW : 206RB, 225, 226, 226R, 277 

for CUTSEW:  888 

for JUKI : DNU-241, DNU-1541, LU-562, LU-563, LU-1114, LU1508, LU-1510, LU-1560 

for MERCURY:  M-280L   M-280LS 

for MITSUBISHI : DU-100, DU-105, LU2-400, LU2-401 

for NAKAJIMA:  280L   280LY-B 

for SEIKO:   LSW-8L    STH-8BLD 

for SINGER : 111G, 111W, 153K101, 153W101, 153W103, 168W, 211G, 211U, 211W 

for SIRUBA:   SBE-710    SBE-715    SBE-720    SBE-725 

for TACSEW : T111-155 

for YAKUMO : 260L