Micro 100 Boring Bar, manufacturer part number QHBBC-1351000-004.
Specifications: Minimum Bore Diameter: 0.1350 in; Maximum Bore Depth: 1.0000 in; Shank Diameter: 3/16 in (0.1875 in); Overall Length: 2.0000 in; Hand Direction: Right; Neck Diameter: 0.1100 in (2.80 mm); Centerline Offset: 0.0675 in; Head Width: 0.1225 in; Face Dimension: 0.0940 in; Length from Holder: 1.0900 in; Corner Radius: 0.0040 in.
Coating/Finish: Uncoated. Unit of measure: Inch.