Up for sale is 2 (two)Bobbin Cases with No Back Lash Spring 541678NBL (410025NBL) plus 10 (ten) Aluminium Bobbins with Deep Cut  55623A. 

for Singer 20U, 20U11, 20U12, 20U13, 20U31, 20U33, 20U51, 20U53, 20U62, 20U63, 20U73, 20U73B, 20U83, 20U83B 

also for Brother Galaxie 8015, TZ1-B652, XL702, XL703, XL622, XL2005, XL4001, XL5001 etc.  and White 162, 305, 510, 690, 710 and Riccar  2800, 2900, 3300, 3400, 3500, 3600, 4001, 4003, 414, 500, 515, 525, 551, 555FA, 606, 805, 806, 807, 808E, 8400, 8500, 888, 906E, 9150, 9160, 9600, 9700, 9800, 9900 

Tajima models: TM, TMB, TMBE, TME, TME-D, TMEF, TMEG, TMFD, TMFX etc. (part no. #ME0503000NBL)(#M1058NBL)

Barudan (#KF220440), Happy (#ESMPZ00080), Eltac (#2-20)

Alternate part numbers: H12805000, 117596001