This is a used Twin Rough Boring Head + Insert Cartridge Holders in GREAT condition. 1 boring head is included per listing. Boring Range with Included Cartridges: 3.36" to 4.20". Total Boring Range: 2.06" to 2.73" (this varies depending on the cartridge holders you have installed).
Body Diameter: 1.93 (49mm). Comes as shown in pictures.