After only 2-3 years of service, I started to have a problem with this unit. When putting the handle all the way up, for maximum flow, it would go past where it should, so when lowering the handle to lower or shut the flow, the handle would hit a 'bump' and need to be pushed harder past this. Upon disassembling, I found that the problem was that the part controlling the limits of the upward range of the handle was plastic, and had broken. Admittedly, I might be somewhat rough in hitting the handle up to turn it on when my hands are full, but, hey - this is supposed to be a well-built, sturdy faucet! As far as I could tell, this part, which is at a high impact/use/pressure functional location, is the ONLY plastic part in this unit. It should be metal!!