Had my 210b for a couple weeks now and am just so impressed with this tool, i have used it almost every day. For service its fast and beautiful, however i do have a question i read earlier on another thread that guys are propressing uponor brass adaptors after inspecting a crimped copper joiiint noticed even the copper tube takes on the shaped of the jaws a hexagonal shape i would question using a uponor adaptor due to the thickness of the brass i tried it just for giggles and it didnt leak but cut it out and soldered a female wirsbo adaptor and pressed that instead. What are your guys impressions on crimpiing to brass adaptors? but i must admit what an awesome tool, allthough im kinda regrettiing that jet sweat kit i bought last month. Im sure it will pay for itself eventually.