Check the listing for details. Micro 100 BBM-040210G, 4mm x 50mm RH Carbide Boring Bar. Condition: New. Listed at 24.30 USD. Micro 100 BBM-040210G Right Hand Boring Tool, (No Cutting Radius) TiN Coated, Metric Dimensions 2mm Minimum Bore Diameter: 10mm Maximum Bore Depth: 0.50mm Projection: 4mm Shank Diameter: 50mm Overall Length, Solid Carbide Bar, MPN: BBM-040210G, PKG QTY: 1 PC