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 78104 3" Dia. x 60 Grit A/Z DynaCut Locking-Type Disc, 2 Ply Cloth, 25/pack
Insize 7342-M0, PIN GAGE HANDLE (OPERATED WITHOUT WRENCH),0.3-1.5mm/0.011-0.060", 6940561971118
3M 60233, Scotch-Brite High Strength Satin Pleated Buff Wheel, HS-SB, 2A Fine, 19 in x 1 in x 2-1/4 in, 7010365510, 10 per case
3M 92158, Sanding Belt, 99260NA, 3 in x 18 in, Fine, 120 grit, 7010369262, 5 per pack
3M 22333, Cloth Belt 577F, 120 YF-weight, 3/4 in x 20-1/2 in, Fabri-lok, Full-flex, 7000119441, 200 per case
3M 64467 Scotch-Brite Durable Flex Belt, DF-BL, A/O Fine, 1/2 in x 18 in, 7100010673
3M 30688, Cloth Belt 577F, 120 YF-weight, 3/4 in x 18 in, Fabri-lok, Single-flex, 7000119460, 200 per case 