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

Dynabrade 78725 5/16" x 5/8"-B53 Dynacut A/O Mounted Point, Vitrified, 5/pack
Insize ISY-700-90021, CLAMPING SCREW, 6940561980790
Dynabrade 11477 Dynabelter Abrasive Belt Tool, Heavy-Duty
Dynabrade 11684 Dynabelter Contact Arm Assembly 4" DIA X 5/8" W., 40 Duro Serrated
3M 18355, Scotch-Brite Coating Removal Disc, CR-DH, SiC Extra Coarse, 5 in x NH, 7000120845
Norton 66261096557 - 3" X 1/2" Blaze Rapid Strip Ceramic Alumina Extra Coarse Grade Non- Woven Abrasive Disc With Quick Change TR III Attachment, 25 Each
3M 20928, PSA Cloth Disc 348D, P180 X-weight, 1 in x NH, Die 100N, 7000118917
3M 86802, Cubitron II Stikit Film Disc 775L, 80+, 5 in x NH, Linered w/Tab, Die 500X, 7100048736, 250 per case
3M 37338, Versaflo Powered Air Purifying Respirator Unit TR-602N, 7100035756, 1 EA/Case
3M 81356, Venture Tape White Aluminum Foil Tape 1558HT, 72 mm a 45.7 m, 5.4 mil, 7010335933
3M 20940, PSA Cloth Disc 348D, P120 X-weight, 3/4 in x NH, Die 75K, 7000118912 