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 14360 Pneumatic Pipe Belt Finisher
Dynabrade 91530 5" Non-Vacuum 150 Grit, Dynacut Extreme Orange Premium Film PSA Disc, 50/pack
3M 05009, Utility Cloth Roll 211K, 100 J-weight, 1 in x 50 yd, Full-flex, 7100016843
3M 10455, Cloth Sheet 481W, 220, 9 in x 11 in, 7010294811
Insize 6302, MICROMETER STAND, 6928640392467
Norton 66261014897 2" x 1/4" Bear-Tex NEX Rapid Blend AO Medium Grit TR (Type III) Non-Woven Wheel, 60 Each
3M 11414, Roloc Disc 361F, P120 XF-weight, TR, 1 in, Die R100N, 7000045104
3M 20940, PSA Cloth Disc 348D, P120 X-weight, 3/4 in x NH, Die 75K, 7000118912 