Proxxon 24520 power shear accessory

One each cutter for 60 degree (metric) and 55 degree (Whitworth) inside threads, 3/64" (1.3mm), 7/64" (2.65mm) and 5/32" (4mm). Shank: 15/64" (6mm). Length: 3 3/16" (95 mm). The cutters are held by a tool holder that mounts to the tool post of the PD 230/E. Comes in a wooden box.