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

works great

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.

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

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

Perfect fit, exact replacement for the factory part on my Ender 3 Pro.

Perfect fit for stock Ender3 V2.

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.

drop in replacement. no issues. came in silver.

These fit my Ender 2 Pro just fine. No issues getting them on or off. Great to have a few replacements standing by. I think the original ones have almost a thousand printing hours by the time I replace them and I only replaced because they are so cheap, I figured why not swap em out.