Anet 604UU U-Groove Guide Bearing Wheel for 3D Printer Extruder 6pcs

High-quality U-groove guide bearing wheel for 3D printer extruder. You can replace the old damaged one with the new one.
Features
High-end material, durable to use.
Eco-friendly, safe and harmless.
High-precision and high speed.
Specifications
Material Bearing steel
Product Weight3g
Product Size4 x 13 x 4 mm (inner diameter x outer diameter x width)
Package Contents6 x U-Groove Guide Bearing Wheel