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1.75X power lens, working distance: 14 / 35.5 cm

Quickly change vent sizes on a custom earpiece

Each tree contains one of each vent size

Designed to hold electrodes in place

1/4 moon style

#13 Medium Tube with Elbow, 3"/76.2mm

Sold individually

#16 Thin Tubing

#13 Tubing

Four sizes per set