Groz-Beckert GB 16X231 ~ Nm 110/18FFG (Pack of 10 Needles) Needles for Most Industrial Straight Stitch Single Needle Machines. Groz-Beckert needles have round shafts and are designed for commercial-style machines. Home-style machines may be able to use these needles.DB X 1173816 X 25771 X 116 X 231287 WHDB X 257 339, 162 AC02 FFG047952674 GColor may vary on your monitor.Buy as many as you need.