3M 29833, Sanding Screen, 120 Grit, 18 in x NH, 7100160843 
3M 86803, Cubitron II Stikit Film Disc 775L, 120+, 5 in x NH, Linered w/Tab, Die 500X, 7100045865, 250 per case 
Insize 4168-12E, STEEL STANDARD BALLS, 7/16″, 6940561981506
$17.58
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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