Finest Workmanship & Quality; Made in USA From M-7 High Speed Steel
Made from best quality, M-7 High-Speed Steel. These are precision tools for the professional gunsmith. Fully guaranteed. Roughers are .010" smaller in diameter than the final size, do not cut the throat area and should be used to save wear on the Finish Reamer when many chambers are to be cut. If only a few chambers will be cut, a Finish Reamer is all you need.
Big Book Catalog, Issue:66, Page:476
SPECS: SHOTGUN REAMERS - 6 or 8, 8° left-hand, spiral flutes, or staight flutes (indicated by * in table). 1" long removable bushing. 1⁄2" square shank, uses standard socket set extension (except .410 which uses Clymer rifle extensions). Stocked in Finishers only. ORDERING: Advise: 1) Stock #. 2) Cartridge Caliber and Name. 3) Rougher or Finisher. Anticipate 4-8 weeks delivery time. 4) Bushing Blank can be used only on 12, 16 and 20 ga. reamers.