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 40610 Electric Dynafile II Abrasive Belt Tool
3M 13767, Scotch-Brite EXL Unitized Wheel, XL-UW, 8A Coarse, 3 in x 1/2 in x 1/4 in, 7010365791
Norton 66243510512 - 4" X 3" X 2" X 5/8" - 11 16 Grit Extra Coarse Aluminum Oxide Gemini Portable Type 11 Flaring Cup Snagging Wheel, 10 Each
Insize 3290-063, V-ANVIL MICROMETER, .04-.6", 6928640328015
3M™ 17323, Versaflo™ Respiratory Helmet Assembly M-407, with Premium Visor and Flame Resistant Shroud, 7000002395, 1 EA/Case
Standard Abrasives 840131, Quick Change Surface Conditioning FE Disc, A/O Coarse, TSM, Brown, 1 in, 7000047094, 50 per case
3M 05011, Cloth Belt 384F, 120+ XF-weight, 3/4 in x 20-1/2 in, Fabri-lok, 7100141429, 200 per case 