3M 22392, Roloc Disc 361F, 24 YF-weight, TR, 3 in, Die R300V, 7000045090 
3M 22407, Roloc Disc 361F, 80 YF-weight, TR, 1-1/2 in, Die R150S, 7000045099 
Insize 4168-14E, STEEL STANDARD BALLS, 1/2″, 6940561981520
$20.47
To measure angle and diameter of taper holes
Material: tool steel
Hardness: HRC63
Diameter accuracy:?.00012?
Roundness .00004″
Supplied with manufacturer inspection certificate.
Related products
General Use Tapes
3M 06506, Scotch Steel Gray Masking Paper, 06506, 6 in x 1000 ft, 6 per case, 7000045440
$48.56
Measuring/ Inspection Instruments
Insize 4102-181, STEEL GAGE BLOCK SET, 81pcs, grade AS-1, 6928640329906
$704.69
Head Protection
3M 82506, Steel Mesh Faceshield Screen W96M 82506-00000, Molded 10 EA/Case, 7000127168
$406.53