Bordo 1/2" x 12 BSW 1" Chrome Button Die 28mm Tungsten Carbide Tipped Holesaw (1/2" Shank) 25mm D.O.C Threading Deep Blind Holes –

Threading Deep Blind Holes – Ideal when maximum thread depth is essential

MQ Chipbreaker: Finishing-to-medium geometry ensures stable cutting

Drawbar Thread: 7/16-20 UNF Drawbar thread

Step Measuring Faces

*Includes the following sizes:4

Bordo 1/2" x 12 BSW 1" Chrome Button Die 28mm Tungsten Carbide Tipped Holesaw (1/2" Shank) 25mm D.O.C Threading Deep Blind Holes –This 1 2" x 12 BSW Chrome Button Die is designed for cutting, restoring, and cleaning British Standard Whitworth (BSW) external threads. Split circular chrome alloy button dies are typically used with a die stock handle, making them ideal for both workshop and on site threading applications. Key Features: Thread Standard: British Standard Whitworth (BSW), developed by Sir Joseph Whitworth in 1841. Versatile Use: Acts as a thread chaser to clean or