Micro 100 Boring Bar, manufacturer part number QBB3-120600.
Specifications: Minimum Bore Diameter: 0.1320 in; Maximum Bore Depth: 0.6000 in; Shank Diameter: 3/16 in (0.1875 in); Overall Length: 2.0000 in; Hand Direction: Right; Neck Diameter: 0.0900 in; Centerline Offset: 0.0263 in; Projection: 0.0300 in; Length from Holder: 1.0900 in; Corner Radius: 0.0030 in.
Coating/Finish: Uncoated. Unit of measure: Inch.