Here is a Norton 180x13x31.75 White Aluminium Oxide Grinding disc for precision grinding applications. A detailed breakdown of the 38A46-KVS3 specifications and uses are below.
NORTON 180X6X31.75 GRINDING DISC. 100 Grit. For Precision Grinding
Norton Blaze Speed Lock 62322 Quick Change Grinding Disc 2 in 60 Grit (27 Ct)
Norton Speedlok Grinding Wheels K80 (1 Pad Only)
Norton Speedlok Grinding Wheels K36 (1 Pad Only)