When you have the new e3d silicone sock, but not the updated heater block: : r/3Dprinting
3DSWAY 3D Printer Parts BP6 Heating Block for PT100 Thermistor Heater Block Silicone Socks for MK8 E3D V5 V6 Hotend Extruder Kit|heating block|printer hotendhotend kit - AliExpress
Block & Sock V6 Upgrade Kit – E3D Online
Original silicone sock for Heater Block E3D | Filament2Print
E3D SuperVolcano Plated Copper Block and Sock | MatterHackers
V6 Silicone Socks (Pack of 3) – E3D Online
Amazon.com: Onyehn 3D Printer Parts 5 pcs Volcano Heater Block Silicone Sock Thermistors Sensor Type Heater Block Silicone Cover fit for E3D Volcano Print Part : Industrial & Scientific
E3D V5 Heater Block V5 Silicone Sock For Original Anycubic I3 Mega/Chiron V5 Hotend Extruder 3D Printer Parts V5 Aluminum Block|3D Printer Parts & Accessories| - AliExpress
E3D Block & Sock V6 Upgrade Kit - 3DJake International
Updating PT100 Block Silicone Sock Kit for DIY E3d v6 hotend Prusa ,Ultimaker3D printer Fast Ship|3D Printer Parts & Accessories| - AliExpress
Block & Sock V6 Upgrade Kit – E3D Online
E3D Block & Sock V6 Upgrade Kit - 3DJake International