Creality 3D Printer Parts Upgrade Heater Block Silicone Cover and Brass Nozzle Tips for MK7/MK8/MK9 Extruder Hotend Sock Heat Insulation for CR-10,10S,S4,S5 Anet A8 Ender 3 Pro V2

Fits perfectly but I had to adjust my temp levels because this version sits lower and covers most of the nozzle and since my settings had already been adjusted for heat creep, it’s too low of a temp now. It’s an easy fix and I adjusted the temp a few degrees hotter so keep this in mind if you have your settings set to avoid any heat creep. Otherwise it’s a perfect fit for an Ender 3 Pro.

works great

Unlike some of the other Silicone Covers available, these were just like the originals. They fit and work just as good as the original cover that come with the printer.

These block socks fit better than some others Ive tried. Would buy more again when I need some.

It does a fantastic job keeping things cool. I’m able to run PLA parts coolers almost touching the extruder.

Im updating my review to 1star and a massive warning - DO NOT BUY THESE. After the first one melted nearly 24 hours later I thought maybe it was just bad so I swapped in another...same thing. Melted in under 24 hours of running at 250C. The third one I swapped in, heated up the nozzle to feed the filament, I noted MASSIVE offgassing and the silicone had already started melting nearly immediately. DO NOT BUY THESE.

These work well on my Tevo Tornado. These are not supper tight but work. Make sure you put it on so the sock covers part of the Thermister. I was getting thermal limit error messages when I cut the sock to fit around the Thermister. Changed it and my printer works great now.

Replacment rubber covers, not much to say to be honest. They fit my printer fine and work as they are meant to. Good value.

Other brand smelled horrible when heated and smoked. These are fine.

These are nice socks but that are not as pictured. They cover more of the nozzle. Ended up returning them without issue and still looking for what is pictured.