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 27551, EMI Copper Foil Shielding Tape 1181, 1/2 in x 18 yd (12.70 mm x 16.5m), 7000132182
Insize 1151-300A, DIGITAL HEIGHT GAGE, 0-300mm/0-12?, 6940561979176
3M 26119, PPS Series 2.0 Adapter, Type S27, 16 mm Male, 1.5 mm Thread, 7100135925
Dynabrade 97570 1/2" NPT Female Safety Coupler
3M 5680, Disc Pad Holder, 3M 915, 5 in x 1/8 in x 3/8 in 5/8-11 Internal, 7000120889
3M 76631, Roloc Disc 777F, TR, 3 in x NH, 36 YF-weight, 7000028339
3M 55055, Cubitron II Cloth Belt 984F, 80+ YF-weight, 3/4 in x 20-1/2 in, Fabri-lok, Single-flex, 7000119520, 200 per case 