Taper Type: NMTB 40 (National Machine Tool Builders) with a 5/8″-11 drawbar thread. It provides a rigid, self-releasing fit into your machine’s spindle.
Mounting Thread: Usually threaded directly into the shank using a 1 1/2″-18 thread, making it interchangeable with other tooling options.
Dial Precision: Typically allows for micro-adjustments ranging from \(0.001″\) to \(0.0002″\) per graduation, depending on the exact Swiss manufacturer (such as Wohlhaupter, Criterion, or generic Swiss-import brands).
Boring Capacity: Varies heavily by model, but standard sizes typically span starting diameters of 1-1/2″ up to 6″ or More
