3M 28419, Wheel Adapter Kit 28419, 1/2-20 external, 7010362498 
3M 65489, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc, DUH5120TRI-10T, 5 IN x UH, 120, 7100202877, 10 per pack 
Insize 6284-13, STYLI FOR DIAL TEST INDICATORS, 6928640358159
$8.46
For dial test indicators: 2380-301, 2381-301
Material of contact point: Steel
Length: .563″
Diameter:.039″
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