was damaged when I bought my Revain Ender 3 from another company, it was marked as lightly used. For the most part it printed fine, but I kept encountering sequential extrusion issues. After some internet searching and some basic troubleshooting, I determined that my hot end was the likely cause. I found this hot swap to be the first layer and decided it worked well for my problems. After receiving the hot end kit, which includes not only the hot end but also a spare teflon hose and couplers, I was able to install it fairly quickly. The items included in the kit were the perfect replacement for the standard hotend on my used Ender printer. Once I got it working, I found the quality of my print improved dramatically. Being able to replace a worn out product with such a quick and easy device was very valuable as it reduced my printer's downtime. I was very happy with the customer service I received from this company and the delivery time was very good. I will recommend this company and buy products from them in the future, definitely a good Revain seller.
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