Would have been 5-stars, but for the high cost. So tale of caution: I dropped my pump and the nipple on the head broke off. It was not a big fall, but there were SS Quick Connect Fittings and their weight involved that proved too much for the plastic nipple. So I ordered the Poly Pump Head. However, I should have removed the broken head before ordering a new one. These are magnetic driven and the magnet broke too. For the cost of the pump head, I could have replaced it with a new pump. (Not the same pump, but this one is over kill for my purposes.) Anyway, the replacement pump head works fine and the pump is working with a broken magnet! (All the pieces fit back easy enough. So before ordering - inspect the pump!