3M 20909, PSA Cloth Disc 348D, 80 X-weight, 2 in x NH, Die 200P, 7000118873 
Insize 4001-3E, CYLINDER GAGE BLOCK, 3″, 6928640358760
$190.63
Made of special alloy steel, hardness HRC64, high stability, wear resistance and easy combination.
Meet ASME B89.1.9, grade AS-1.
Can be connected with M6x1 screw and combined to any sizes up to 150″.
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