Carmex Internal Right Hand Thread Turning Toolholder – 40 mm Shank 16 mm Insert SIR 0040 T16 Insize Tubular Inside Micrometer 5 6" Range Series 3229 6 ✔ Thread Size: 3 16" BSW 5110801 ✔ Thread Size: 3 16" 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 Built with a compact 12 × 12 mm shank is a world renowned manufacturer of high quality threading tools the SIR 0040 T16 delivers reliable insert clamping