3M 00705, Interam Stainless Steel Foil Tape T-65, 4 in x 100 ft, 7100024280 
Insize 4168-20E, STEEL STANDARD BALLS, 11/16″, 6940561981582
$20.23
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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