Norton 66261199696 - 3" X 1/4" X 1/4" Vortex Rapid Blend Unified Wheel, 7AM U2305, 40 Each 
Dynabrade 97571 1/2" NPT Male Safety Coupler 
Insize 4168-10E, STEEL STANDARD BALLS, 3/8″, 6940561981483
$14.21
To measure angle and diameter of taper holes
Material: tool steel
Hardness: HRC63
Diameter accuracy:?.00012?
Roundness .00004″
Supplied with manufacturer inspection certificate.
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Insize 3293-061, CAN SEAM MICROMETER, 0-.5″, for steel cans, 6928640328497
$140.37