uxcell 30 Pcs Aquarium Tank Plastic 5mm Dia 2 Way Air Valve Line Connectors Product Name : Aquarium Tubing Connector;Tube Connector Dia (Approx.) : 5mm / 0.2" Overall Size (Approx.) : 20 x 20 x 6mm /0.79" x 0.79" x 0.24" (L*W*H);Material : Plastic Color : Clear Weight : 18g Package Content : 20 x Aquarium Tubing