Correctly modify military safety shrouds to accept two-position safeties from Chapman and Precise Metalsmithing. Items sold separately.
Big Book Catalog, Issue:65, Page:481
SPECS: Combination Arbor - Steel, blue. ½" (12.7mm) shank, accepts ½" " through 1" arbor slotting saws. Slotting Saw - HSS, 30 tooth, 3" (7.6cm) dia., 1" (2.5cm) dia. arbor, 1⁄8" (3.1mm) thick. Woodruff Cutter - HSS, 1"dia., 7⁄32" (5.5mm) thick, shank dia. ½" " (12.7mm).