Disc styli are designed to inspect undercuts and grooves within bores which may be inaccessible to star styli. A range of disc styli offers a radius end roller to enable groove width measurement. Silver steel tips are heat treated and precision ground to a high tolerance.

Previous part number: M-5000-4152

Equivalent to Mitutoyo part number: K651030

Equivalent to Q-Mark part number: TM2-1511-CYL