I'm extremely frustrated with this purchase. I bought a couple of these heat breaks for my basic Ender 3, so I could have spares in the event the old one needed replacing...so of course the time to replace the heat break after a clog/pressure buildup jammed up the threads on the old one, only to discover that this is not at all like the heat break in my Ender 3. The bowden tube is seated way up top like with an all-metal hot-end instead of beside the nozzle, and the beveling that guides the filament from the bowden tube and into the heat break is so minimal that the filament keeps getting jammed up extremely easily on any retraction settings, causes clogs, and widens bowden tubes to clear the clogs, thereby exacerbating the issue further and making it irreparable without replacing the bowden tube or turning it around...and then after doing so, it just jams up again. In addition, I had to trim the nub off my Z-stop limit switch to reposition, since the length is entirely different, and the heating block is seated right up beside the heat sink. There is no way that this is meant for the Ender 3 stock hotend setup at all, and I can't believe that it was tagged as an Ender 3 product.

Used. It to connect a volcano block to my ender 3. Helps for high temp and is super high quality