Item Type: 3D Printer Linear Guide Mode: MGN12C Length: Approx. 31cm/12.2in Compatible Mode: for Ender 3, for Ender V2, for Ender 3 Pro Package List 1 x Slide Rail 16 x Screw 16 x Nut 1 x Mounting Bracket 1ABS, Stainless Steel: Made of excellent ABS and stainless steel material, this liner rail guide is wear resistance, impact resistance, not easy to deform and rust, durable and has a long life span. 2Easy Installation: The linear guide can perfectly fit the 3D printer, and it is easy to install the rail on the machine. 3Scope of Application: This linear guide is compatible with for Ender 3, for Ender V2, for Ender 3 Pro. Please identify the model before purchasing. 4Exquisite Workmanship: This linear guide is well made with flat appearance, standard size and stable performance. 5Ideal Replacement: These linear rail guide can be easily installed, ideal replacement for the old and damaged parts.