The shank is electrically conducted to the metal workpiece through the chuck and table,
the LED lights up and the beeper sounds(only for 6566-3E),
when the ball touches the workpiece
Not suitable for rotary use. Hardened shank and contact ball
Hardened shank and contact ball

3M 26022, PPS Series 2.0 Adapter, Type S12, 10 mm Male, 1.0 mm Thread, 7100135943
Insize 6300, MICROMETER STAND, 6928640307294
3M 20942, PSA Cloth Disc 348D, 80 X-weight, 3/4 in x NH, Die 75K, 7000118911 