Micro 100 Boring Bar, manufacturer part number QHBBC-100562-004.
Specifications: Minimum Bore Diameter: 0.1000 in; Maximum Bore Depth: 9/16 in (0.5620 in); Shank Diameter: 3/16 in (0.1875 in); Overall Length: 2.0000 in; Hand Direction: Right; Neck Diameter: 0.0900 in; Centerline Offset: 0.0500 in; Face Dimension: 1/16 in (0.0630 in); Head Width: 0.0950 in; Length from Holder: 1.0900 in; Corner Radius: 0.0040 in.
Coating/Finish: Uncoated. Unit of measure: Inch.