Accusize Tools - AXA Boring Turning and Facing Holder, Quick Change Tool Holder, 0250-0102 For Lathe Swing 6-12'', AXA Style 2: Boring Turing & Facing A: 15/16'' ; B: 1/2''; C: 7/16''; D: 1-1/2", Shank 1/2" All parts are hardened, ground and completely sealed for maintenance free operation