Highly effective and good value,
This review is from: Water Pump Whale In Line 12v 12 Litre (Misc.)
12v line pump with adapters for larger pipe sizes. Pump not suitable for continuous running.
Sometimes has problems self-priming if small pockets of air get in the system, esp when pumping into a large "head" of back pressure and/or with low feed pressure.
Overall, a highly effective pump and good value for money.