What's in the box:

Original Creality 3D 5pcs GT2 Synchronous Wheel Pulley 20 Teeth 5mm Aluminum Bore for 6mm Timing Belt Width Comaptible with CR-10 Series/Ender-3 Series/Ender-5 Series 3D Printer (Standard)

Features:
High precise synchronous wheel, 20 teeth, 5mm bore diameter, match 6mm timing belt width.
Precise transmission, smooth running, efficient synchronization, low noise.
Made of high quality aluminum alloy material, sturdy and durable.
Compatible with CR-10 Series/Ender-3 Series/Ender-5 Series 3D Printer.
Widely used in milling machine, drilling machine, hobbing machine or other machinery transmission occasions.

Specifications:
Color: Silver
Material: Aluminum Alloy
Quantity: 5pcs
Teeth Number: 20
Bore Diameter: 5mm
Outside Diameter: 16mm
Application Models: CR-10 Series/Ender-3 Series/Ender-5 Series
Item Size(each): 16 * 16 * 16mm / 0.6 * 0.6 * 0.6in
Item Weight(each): 5.8g / 0.2oz
Package Size: 20 * 15 * 2cm / 7.9 * 5.9 * 0.8in
Package Weight: 55g / 1.9oz

Packing List:
5 * Synchronous Wheel