Groz-Beckert DB X 1 #18 Pack of 100 Sewing Machine Needles Groz-Beckert GB 16X23 Nm 110/18 (Pack of 100 Needles) DB x 1, 1738, 16 x 257, 71 x 1, 16 x231, 287 WH, DB X 257 Needles for Most Industrial Straight Stitch Single Needle Machines. designed for commercial-style machines.