3M 14308, AB14308, Square/Cross Pad Mandrel, 1/4 in 1/4-20 External, 7000045662 
Insize 4760-1150, 60? SQUARE, 5.9×3.9″, 6928640318184
$54.76
Made of hardened stainless steel.
5.9′ x 3.9″
60 Degree Square
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