I like the crimping tool. When I did my toilet change out you have to crimp the connections under the sink for example in the right order. I tapped off the hot water heater cold water supply under the sink to get water to the toilet. Many of the connections you can't crimp if they are in their final location. You have to assemble your run outside and then feed the assemble under the sink because there is no room to work the big crimping tool. The final crimp must be in a place to swing the arms of the tool.
The crimping tool is fast and reliable, but if you have to do a repair in a difficult place the brass fittings are a good thing to have in an emergency repair kit. Wrenches are smaller than the crimping tool. Robert
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