3M 65033, Scotch-Brite Diamond Wheel, 645DC 6 in x 1/2 in x 1 in, 7010365574, Box of 3 
3M 10115, Synthetic Steel Wool Pads, #3 Coarse, 7000051986 
Insize 4168-22E, STEEL STANDARD BALLS, 3/4″, 6940561981605
$20.39
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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