Dynabrade 95722 Threaded Mandrels, 1/4" Dia x 1/4" Shank 
3M 14308, AB14308, Square/Cross Pad Mandrel, 1/4 in 1/4-20 External, 7000045662 
Insize 4701-1, ADJUSTABLE SQUARE, 6928640318351
$152.50
The straight edge can move and can be locked by the clamping screw.
Made of hardened stainless steel.
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Insize 4702-1, SQUARE SET, includes 4794-025, 4794-040, 4790-075 and 4700-100, 6928640318467
$194.09
