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 03140, General Purpose Sanding Sponge CP041-6P, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Medium, 7100101537, 6/pack
Insize 6144, ACCESSORY SET FOR DIGITAL CALIPERS, 6928640380839
3M 05580, Cloth Belt 577F, 80 YF-weight, 1/4 in x 24 in, Fabri-lok, Full-flex, 7010361594, 200 per case
Dynabrade 97571 1/2" NPT Male Safety Coupler
3M 86775, Cubitron ll Cloth Belt 947A, 40+ X-weight, 3/4 in x 18 in, Fabri-lok, Single-flex, 7100033084, 200 per case 