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Ace Glass, 5031-12, Twin #7 x #7 Ace-Thred x 29/42 Bottom Joint Lab Adapter
With inner joint at bottom and two off-set Ace-Threds at top. Two threaded openings enable you to insert two inner tubes, such as a thermometer and a bleed tube, through the same joint. Supplied complete with (2) nylon bushings and FETFE O-Rings.
Adapter, twin, 29/42 inner it bottom, (2)#7ace-thred top
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