Micro 100 QBM-2301250X Right Hand Quick Change Boring Tool for Milling Machine, Solid Carbide Tool, AlTiN Coated, 0.230"(5.84 mm) Minimum Bore Diameter, 1.250" (31.8 mm) Maximum Bore Depth, 0.110" (2.79 mm)Tip of Centerline to Cutting Tip, 0.008" (0.20 mm) Tool Radius, 0.2500" (6.4 mm) Shank Diameter, 2-1/2"(64 mm) Overall Length