3M 22407, Roloc Disc 361F, 80 YF-weight, TR, 1-1/2 in, Die R150S, 7000045099 
Insize 7262-150, OUTSIDE SPRING CALIPER, 6″, 6928640319662
$15.25
Made of carbon steel.
Outside Spring Caliper
6″ Outside Diameter Range
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Interchangeable Spares
S/A Rear Wire Guide Spring (Includes 981705067000 & 981705068000), 981705260000