for Ender3/Ender3 PRO/ V2 Y-Axis Upgrade Dual Guide Kit 300mm Linear Guide Rail
With: Slide Plate Fixed-Seat x 2peices; Linear Guide (300mm) x 2peices ；1 Set Screws & Nuts. These adapters require rails for the ender-3/pro and ender-3 v2, the length required is 300mm. 2 Peices Linear Guide (300mm).