Uxcell Green Fish Tank Aquarium Air Stone Product Name : Aquarium Bubbles Air Stone; suitable for : fish Tank, Aquarium; material : rubber, Plastic, paper Air Stone body length : long: 21.5cm/ 8.5"Short: 12cm/4.7";tube diameter : 1cm/0.4" Total Size(Approx.) : long: 22.5 x 2.5 x 2.5cm / 8.8" x 1" x 1"(L*W*H)Short: 16x 2.5 x 2.5cm / 6.3" x 1" x 1"(L*W*H);hole outer diameter : 5Mm/ 0.02" Hole inner Dia : 2Mm/0.08";color : Green Net weight : 194g;Package : 6 Sets Aquarium bubble Air Stone