Organ 251LG 251E (LWx5T, SY7425, 20C300LG, 29CB, 29BNL, 300G) Curved Needles Box of 50 10x5PK, US BlindStitch Stitchline Lewis UnionSpecial Rex Consew

For Japan made full size and portable blindstitch hemmer machines, most in USA from Yamagata JAPAN, Center Manufacturing Company.

U.S. Blindstitch :718, 718-C, 718-2, 1118, 118-C, 1099.
US Stitchline SL718-2
Columbia : T1718, T175
Consew 718, 1118-2, 75C (not 75T)
Union Special 99KS blindstitch machine
Rex

A needle system is a group of needles made to fit specific sewing machines. All needles in a system are of the same length and shank size, but are of various diameters. Lower size numbers are narrower or thinner needles used for lighter materials. Higher size numbers indicate a needle of thicker diameter, used for heavier materials. Match your needle system to your machine, then the size of the needle to the product you are sewing.

Size 8 (Metric Size 60)
Size 9 (Metric Size 65)
Size 10 (Metric Size 70)
Size 11 (Metric Size 75)
Size 12 (Metric Size 80)
Size 13 (Metric Size 85)
Size 14 (Metric Size 90)
Size 15 (Metric Size 95)
Size 16 (Metric Size 100)
Size 18 (Metric Size 110)