Hose Barb for Water Cooled Breadboard

3/8 in Hose Barb for Base Lab Tools' Water Cooled Solid Aluminum Optical Breadboard, Black Anodized. These hose barbs can be used to secure vinyl tubing to   a cooling plate.  First a compression fitting is tightened in place at the end of the copper tubing extending from the Optical Breadboard.  Once fastened, the Hose Barb can then be screwed into place, using a bit of teflon tape.  Now the 3/8 in ID, 1/2 in OD Vinyl Tubing can be pushed securely into place and cut to a desired length.