Test Bars relatedproduct enhanced ability to hold tight

enhanced ability to hold tight limits and the best wear and corrosion resistance on the market

collet chuck extensions

They are designed with a square drive in the collet

Retention knobs available separately for purchase

Produced from mill certified

Test Bars relatedproduct enhanced ability to hold tightFitz Rite test bars are made in the USA and are held to the highest standards for checking the accuracy of your CNC machining centers' spindle. They are manufactured from mill certified hardened alloy steel. The shank is held concentric to the taper within one tenth (TIR . 0001"). The taper is manufactured to ASME B5. 50 standards and precision ground to meet AT 3 tolerance. Test bars require a retention knob fitted to your machine specifications.