3M 97979, Hi-Strength 94 ET Cylinder Spray Adhesive, Clear, Large Cylinder (Net Wt 26.2 lb), 7000144615 
Insize 4168-6E, STEEL STANDARD BALLS, 1/4″, 6940561981445
$12.22
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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