3M 26137, PPS Series 2.0 Adapter, Type S41, Trapezoidal Thread - QCC, 7100135947 
3M 26130, PPS Series 2.0 Adapter, Type S35, 16 mm Female, 1.5 mm
Thread Stretched, 7100135926 
Insize 4162-2251, PIN GAGE SET. 250pcs, .251″ ~.500″, 6928640380259
$343.75
ACCURACY -.0002″
Class ZZ.
Made of alloy steel.
Hardness HRC60-62.
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