20-piece SAE Inch Size Tap and Die Set | SAE Thread Type: NC | Thread Creating and Repair Tool Kit with Storage Box

Long Life Durability:Professional industrial grade GCr15 bearing steel material for long- life durability and good tool function maintenance.

SAE Inch Size thread, NC thread: 1 long handle tap wrench + 1 die wrench + 9 dies + 9 taps Frequent used thread size included: 1/16-1/2(M3-M12) + 1 long handle tap wrench: 1/16-1/2(25mm) + 1 die wrench (25mm) + 9 dies & 9 Taps: 4NC40 6NC32 8NC32 10NC24 1/4NC20 5/16NC18 3/8NC16 7/16NC14 1/2NC13 Wide application: Precisely correct or repair damaged threading, or create internal and external threading holes on wood, brass, copper, aluminum, iron, carbon steel, and etc.

Perfect threading manufacturing process and good surface heat treatment: Teeth of the tools are precisely CNC machined and qualified surface heat treatment to Rockwell hardness 60 HRC for best threading performance.