3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956 
Insize 6531-5, 1-2-3 BLOCKS, 3x2x1″, 6928640379338
$75.47
Pairs of matched blocks for positioning and set-up
Screws and wrench are included
Hardness HRC 55-62
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