Up for saale is 2 (two)Bobbin Cases with No Back Lash Spring 541678NBL (410025NBL) plus 10 (ten) Plastic Bobbins 55623P. 

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