3M 16905, Scotch-Brite Roloc Surface Conditioning Disc, SC-DR, A/O Very Fine, TR, 3 in, SPR 014182O, 7010328972, 100 per case 
Insize 3590-153E, DIGITAL V-ANVIL MICROMETER, .04-.6″/1-15mm, 3 flutes, 6928640356100
$642.06
Resolution .00005″/0.001mm.
Measure the diameter of parts or cutting tools with odd grooves, such as tapes, reamers and end mills.
IP65 dust/waterproof. Button function: on/off, set, inch/mm, ABS/INC.
Data output. LR44 battery, automatic power off.
Ratchet stop.
Carbide measuring faces.
Supplied with setting standards.
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3M 08017, Marine Grade Silicone Sealant, White, 3 oz Tube, 7000120479, 6/Case
$16.71