Carmex Mill Thread Solid Carbide 14 UN with internal coolant through flutes 20.9mm depth 16 x 25mm D.O.C HSS 3 4" Universal Shank Annular Cutter ✔ Thread Size: 1 8" BSW while the stepped shank ✔ Thread Size: 1 8" BSW (British Standard Whitworth)✔ Standard: ISO 529✔ Material: High Speed Steel (HSS) for enhanced strength and wear resistance✔ Thread Form: 55° flank angle for precise and secure Whitworth threading✔ Tolerance Class: Class 2 for a standard thread fit✔ Flute Type: Straight flute for effective chip removal✔ Lead Type: Intermediate lead for balanced cutting performance✔ Cutting Direction: Right hand cutting✔ Application: General purpose threading across various materials or it can be attached to the basin first and then lowered onto the pipe Thread Type: UN Carbide Grade: MT7