About time I bought a new nozzle for my MicroSwiss all metal hot end. The last one has lasted 4 years, when I originally fitted the MS hot end, about a week after I bought my Wanhao Duplicator i3 Plus from Technology Outlet. Nozzles are often overlooked but need to looked after the same as the rest of the machine. Thanks Guys, bought the i3+ from you in 2017 and still going strong 👍🏼