Note: Multi-size of pulley,please confirm correctly before you bought.
Application:
Perfect for 3D Printer: CR-10, CR-10S, CNC router , 8020 3030 and so on.

Specification:
Feature: V groove wheels, for v-slot wheels, v guide wheels
Color: Black and Silver
Material: POM and Metal
Inner Hole Diameter: 5mm
Part of POM Size: 24 x 10.2 mm / 0.94 x 0.4 inch (OD*H)
Total Height: 11mm / 0.43 inch

Package Content:
4 x Wheels with Bearing