3M 76632, Roloc Disc 777F, 50 YF-weight, TR, 3 in, Die R300V, 7000045628 
Insize 2277-2, DOUBLE SQUARE, 6″, 6928640374838
$38.99
Graduation 1/8″, 1/16″,1/32″,1/64″
Accuracy: ?2min for 90? square
Hardened and chrome plated blade
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