What's in the box:

Aiebcy MK8 Assembled Extruder Hotend Kit with Aluminum Heating Block 0.4mm Nozzle Heater Wire Thermistor PTFE Tube Pneumatic Connector Compatible with Creality Ender-3/Ender-3X/Ender3 pro 3D Printer (Standard)

Features:
MK8 assembled extruder hotend kit is compatible with Creality Ender-3/Ender-3X/Ender-3 Pro 3D printer.
0.4mm nozzle; 1.75 filament size; aluminum heating block; and heater wire 24V.
100K ohm thermistor with pin head, 27cm PTFE tube for 1.75mm filament.
Made of aluminum, with excellent heat resistance and heat insulation, durable and smooth printing.
Nozzle with silicone protective cover, safer and faster heating.

Specifications:
Heat Sink Material: Aluminum
Heater Block Material: Aluminum
Nozzle Material: Brass
Filament Diameter: for 1.75mm
Nozzle Size: 0.4mm
Tube Length: 1m/ 3.3ft
Heater Block Size: 21 * 21 * 12mm/ 0.8 * 0.8 * 0.5in
Package Size: 12 * 10 * 2.5cm / 4.7 * 3.9 * 1.0in
Package Weight: 80g / 2.8oz

Packing List:
1 * Hotend Extruder Kit
1 * Pneumatic Connector