uxcell 4-Piece Aquarium Air Line Tubing 4-Way Joint Valve Connectors, 10mm 4 way design Easy and convenient to install; Fit to use with 10mm aquarium air line tubing Product Name : Aquarium Air Tubing Connector; Type : 4 Way Material : Plastic; Color : White Tube Dia(Each) : 10mm/0.39"; Overall Size : 69 x 69 x 10mm/2.7" x 2.7" x 0.39"(L*W*D)