3M 65489, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc DUH5120TRI-10I, 5 inch UH, 120, 7100202873, 10 per pack 
Insize 3280-2, NON ROTATING SPINDLE UNIVERSAL MICROMETER, 1-2″, 6928640356162
$473.96
Graduation .0001″.
Non-rotating spindle.
Ratchet stop.
Supplied with 7 pairs of anvil/spindle tip.
Setting standards are included (except 0-1″).
Optional accessary: 55? anvil/spindle tip.
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