These are high quality brand New 

Large Aluminum Bobbins (#82552 ) ,Shuttle Hook(#81952).

Fit SINGER 29K 29-30, 29K72, 29U171, 29U172, 29U172A using Large Bobbin Sewing Machines.

Fit ADLER 30-7, 30-70 using Large Bobbin Sewing Machines.

Fit CONSEW 29B 29BL using Large Bobbin Sewing Machines.