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EMT Tube Fishmouth Coping Marking Sleeves
This twin marking sleeve slides onto 3/4 in EMT (23.4 mm OD) or 1/2 in EMT (17.9 mm OD). Each saddle-cut top edge is the exact fishmouth for a 90° tee into a tube of the same size, so you trace it with a fine marker and grind or file to the line. M4 thumb screws in self-tap bosses hold each sleeve in place while you trace. The part is 70 mm long and 26 mm tall, which solves the problem of hand-laying-out tube copes for EMT carts, racks and canopy frames.
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