UL Listed & Water Flow Control - Our water pump is UL 1081 compliant. An adjustable knob to control water flow, so you can get just the amount of water pressure you want. you wish. Maximum Flow: 550 GPH (2000 L/H). HIGH POWER & HIGH LIFT – Max lifting height: 7.2 ft. The model number is SML-630. High efficiency 30W motor for energy saving. The lifting height is a maximum height that the water rises, after connecting the water pipe to the nozzle (make sure the joint is well sealed and tightly). 3 NOZZLES - - Each water pump has 3 optional nozzles: 0.51"/0.62"/0.75". Provide different water flow as you like. Threaded connections make it more stable. Removable and cleanable. SUCTION CUP & 5.9 FEET POWER CORD - Long enough cord for easy installation, 4 strong individual suction cups help hold it in place, so you can stick it to the right side of the car. vertically or horizontally. WIDELY APPLIED - Circulate and aerate the water, making it more attractive to your fish or turtles.This