Dynabrade 79105 1/4" W x 12" L 60 Grit DynaCut Premium Ceramic Belt, 50/pack 
Insize 4168-13E, STEEL STANDARD BALLS, 15/32″, 6940561981513
$17.42
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
Measuring/ Inspection Instruments
Insize 3293-061, CAN SEAM MICROMETER, 0-.5″, for steel cans, 6928640328497
$140.37
General Use Tapes
3M 06512, Scotch Steel Gray Masking Paper, 06512, 12 in x 1000 ft, 3 per case, 7010327747
$88.10
Non-Woven Hand Pads
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
$2.69