Micro 100 Boring Bar, manufacturer part number BBM-040410G.
Specifications: Minimum Bore Diameter: 4.40 mm; Maximum Bore Depth: 10.00 mm; Shank Diameter: 4.00 mm; Overall Length: 50.00 mm; Hand Direction: Right; Neck Diameter: 3.00 mm; Split Length: 2.50 mm; Centerline Offset: 2.00 mm; Face Dimension: 0.08 mm; Projection: 1.00 mm; Tooth Width: 2.16 mm.
Coating/Finish: TiN. Unit of measure: Metric.