Needles for Most Industrial Straight Stitch Single Needle Machines.
DBx1 or Systems 16x95, 16x257, 16x231 
Regular Point Sizes: 10, 12, 14, 16, 18
Ball Point Sizes: 10BP, 12BP, 14BP  (Click here for partial list of Machine Models) 

Needles for Most Overlocks/Sergers
B27 or System DCx27
Regular Point Sizes: 10, 12, 14, 16, 18
Ball Point Sizes: 10BP, 12BP, 14BP  (Click here for partial list of Machine Models)  

Needles for Most Walking Foot Machines  (Click here for partial list of Machine Models)

DPx17 or System 135x17 Cool Sew Needles Coated to reduce Friction

Needles for Most Industrial Zig-Zag & Double Needle Machines
DPx5 or Systems 135x7| 1955 | 134R 
 

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