Omega Products BT50 Test Arbor - 50mm Diameter - 350mm Gauge Length M&D and general fabrication where a

and general fabrication where a flush screw head is essential

delivering longer tool life and reliable performance in tough machining environments

Shank: Long shank for extended reach and stability in deep grooves

more accurate cuts in tight tolerances

reducing rework and enhancing finish quality

Omega Products BT50 Test Arbor - 50mm Diameter - 350mm Gauge Length M&D and general fabrication where aOmega BT50 Test Arbor is a precision master mandrel designed for BT50 tooling and spindle alignment. With a 50 mm diameter and 350 mm gauge length, it provides a stable reference for calibration, runout checks, and setup verification in workshops and production environments. Listed as BT MAS403 (JIS 6339) Master Mandrel, it is designed for compatibility with standard BT50 tooling. 50 mm diameter for stability: A robust diameter minimizes flex during