What's in the box:

Creality 3D 2GT 20 Tooth Pulley Aluminum Alloy Timing Gear Synchronous Wheel (2)

Features:
Teeth: 20; Bore Diameter: 5mm; Belt Width: 6mm
High precision, smooth and accurate rotation rate, seamless matching synchronous wheel.
Precision contact with the tooth side which minimizes the risk of the belt slipping.
Made of premium aluminium alloy material, sturdy and durable.
Perfect choice for building a 3D printer or similar projects.

Specifications:
Brand: Creality 3D
Material: Aluminium Alloy
Quantity: 1pcs
Model: 2GT
Teeth Number: 20
Bore Diameter: 5mm
Outside Diameter: 9mm
Compatible timing belt width: 6mm
Item Weight: 13g / 0.45oz
Package Size: 6 * 4.5 * 2cm / 2.4 * 1.8 * 0.8in
Package Weight: 15g / 0.52oz

Package List:
1 * Teeth Pulley