3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095 
Insize HDT-B-HRB, ROCKWELL HARDNESS TEST BLOCK, 88-100 HRB, 6940561943900
$38.68
ROCKWELL HARDNESS TEST BLOCK, 88-100 HRB
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