What's in the box:

1 X Aibecy 3pcs MK9 Hotend Silicone Sock Heater Block Protective Silicone Cover Case Compatible with Creality Ender 3 Ender 3 Pro Ender 5 CR-10 10S S4 S5 Anet A8 3D Printer (Blue), Blue

Features:
Silicone insulating sleeve is more durable and has better effect.
The silicone insulating sock can make the heater block heating faster, it can prevent the temperature spillover of the hot end, and help to keep the hotend temperature extremely stable.
After using this silicone sock, you can start the cooling fan at full speed, and print high temperature materials, improve the success rate of printing.
Made of high quality silica gel material, which is very durable, can be tightly wrapped with heating blocks, and is easy to disassemble and install.
Comes with 3pcs silicone cover.

Specifications:
Color: Blue/Black(optional)
Material: Silicone
Quantity: 3pcs
Item Size: 23 * 23 * 14.5mm / 0.9 * 0.9 * 0.6in

Package List:
3 * MK9 Silicone Sock