What's in the box:

Aibecy 4pcs POM Pulley Wheel with Bearing 5mm Bore Diameter Idler Pulley Gear for CNC 3D Printer Accessories (4)

Features:
4pcs Idler Pulley Wheel, outer diameter 24mm, 5mm bore diameter.
Adopting premium material, POM + Carbon Steel, sturdy and wear-resistant.
Dust and foreign matter prevention, high speed, stable performance.
Compatible with Anet E16/ET4/ET4 PRO/ET5/ET5 PRO, Creality CR-10/CR-10S/CR-10 V2/Ender 3 and so on.
Suitable for 3D printer, CNC, writing machine and other mechanical equipment.

Specifications:
Color: Black
Quantity: 4pcs/13pcs(optional)
Pulley Wheel Material: POM
Bearing Material: Carbon Steel
Bore Diameter: 5mm
Item Size(1pc): 2.4 * 2.4 * 1.0cm / 0.9 * 0.9 * 0.4in
Item Weight(1pc): 12g / 0.4oz
Package Size: 15.0 * 10.0 * 1.0cm / 5.9 * 3.9 * 0.4in (13pcs)
13.0 * 9.0 * 1.0cm / 5.1 * 3.5 * 0.4in (4pcs)
Package Weight: 174g / 6.1oz (13pcs)
54g / 1.9oz (4pcs)

Note:
Due to manual measurement, the error of 1-2mm is normal.

Packing List:
4 * Idler Pulley