This product is an optional accessory. See below, which printers are compatible.
Original Prusa Nextruder Silicone Sock Set
Original Prusa Nextruder Silicone Sock Set
Gridfinity Prusa Nextruder Silicon Sock Holder by LegoDragonX
Silicone Sock Mold Nextruder - Prusa MK4 / XL by TimTwix
Top 10 Upgrades/Mods for Prusa MK4!
Prusa Nextruder Silicone Sock - 3 Pack
Silicone Sock-X - for Prusa MK4/XL - Levendigs
Silicone Sock Mold Nextruder - Prusa MK4 / XL von TimTwix
E3D Silicone Sock on Original Prusa i3 MK2 + PID Tuning
Silicone Sock Mold Nextruder - Prusa MK4 / XL by TimTwix, Download free STL model
Prusa MK4 & Prusa XL Heat Block Orange Silicone Sock X
Prusa Nextruder Silicone sock - set Original Prusa 3D printers directly from Josef Prusa
Silicone sock (MK3S+)? : r/prusa3d