Anti-rust Coating Surface: Linear Guide Rail adpots blackening treatment on surface to prevent rusting in long-term use Upgrade 3D Printer: The MGN12 Linear Rail will upgrade your 3D printer,which can improve print quality and carrying capacity greatly Premium Material：The linear bearing is made of heavy-duty bearing steel,which is more durability, high stiffness stiffness,high accuracy,smooth running, low noise than others.Material: Metal Application: This linear motion rail widely use in Ender 3 series/CR10 series 3D printers, large-scale transmission equipments including industrial robots, cleaning equipment and supporting devices, etc Drop Proof Rubber：There are 2 black rubber stoppers on the ends of the linear sliding guideway in case the carriage falls off the rail Material:Bearing Steel
Type:Slide guide rail
Slide Track:Linear guide rail
Accuracy level:H
Length(Optional):(Approx)500mm/19.685inch
MGN12H:Basic dynamic load rating:380 C[kgf]
Basic Static Load Rating:600C[kgf]

Packing list:
1 × MGN12 Linear Rail
1 × MGN12H Bearing