Micro 100 Boring Bar, manufacturer part number PR-070500.
Specifications: Minimum Bore Diameter: 0.0800 in; Maximum Bore Depth: 1/2 in (0.5000 in); Shank Diameter: 1/8 in (0.1250 in); Overall Length: 1-1/2 in (1.5000 in); Hand Direction: Right; Neck Diameter: 0.0450 in; Centerline Offset: 0.0075 in; Projection: 0.0250 in; Tooth Width: 0.0210 in; Corner Radius: 0.0050 in.
Coating/Finish: Uncoated. Unit of measure: Inch.