Mounted Shelf With Pin SE Holders There are plenty of handy

There are plenty of handy uses for these inexpensive

Connector is made out of Delrin

and extended high volume evacuator valves hung by the tip

Installation Instructions (PDF):

Mounted Shelf With Pin SE Holders There are plenty of handyMounted shelf has a 1 2" pin mount in the center of the tray and must be used with a folding arm section (#08 60, #08 61, #08 62, or #08 63). Use with any mounting bracket. Product Details: Specs: 13 1 2" X 9 3 4" tray pivots and holds up to 20lbs. Shelf accepts standard "B" size set up trays (#17 01, #17 02, #18 01, and #18 02). Light gray, powder coated, heavy duty, metal construction. NOTE: Pole mounting bracket and arm section are not included