Extend your 3018 CNC Y-axis from 290 mm to 450 mm, get a 320*450mm basic area, 320x370mm workable area.Upgrade your 3018 CNC X-axis with a longer T8 lead screw and knob, makes the operation more convenient.Compatible with most 3018 Pro series CNCs, 3018 Pro, 3018 Pro Max, etc.Great value to upgrade your 3018 CNC and get a bigger one.Easy to Assembly.NOTE: YOUR 3018 CNC SHOULD BE EQUIPPED WITH8 mm T8 Lead Screw10 mm Guide RailNo Counterbore on the End Plates for RailsColour: as shownMaterial: metalPackage Contents:2 * 2040 base aluminum profile (length 450mm)2 * 10mm optical axis (length 450mm)1 * T8 screw (length 470mm)1 * Handwheel1 * copper nut1 * Elastic Coupling1 * SpringOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.