uxcell Tortoise Shaped Stone Aquarium Pond Pump Air Bubble Aerator Dark Green Color: Blue, Dark Green; Package Content: 1 x Aquarium Bubble Air Stone Total Size: 7 x 4.5 x 2.2cm/ 2.8" x 1.8" x 0.87" (L*W*T); Material: Plastic, Stone Product Name: Aquarium Bubble Air Stone Net Weight: 42g Outlet Hole Diameter: 3mm/ 0.12"