CNC 3018 Plus X-Axis Upgrade Kit Suit CNC Router 3018 Pro with CNC Milling Machi. 2 set tool:1 x 42BYG/57 Stepper & 1 set x X axis upgrade kit CNC 3018 Plus X-axis Upgrade Kit Suit CNC Router 3018 Plus e:SCS12VUU: The suitable optical axis diameter of the product is 12 mm, and the lead of the T8 screw is 4 mm (one circle is 4 mm) SCV10VUU: The suitable optical axis diameter of the product is 10 mm, and the lead of the T8 screw is 4 mm (for example, CNC3018, CNC3018PRO) It support 38/40mm/42mm/44mm/45mm/46mm/52mm and 65mm fixture. Material:metal colour:yellow + Silver Package Contents: 1 set x 42BYG/57 Stepper 1 set x axis upgrade kit. This item is in the category "Business, Office & Industrial\Printing & Graphic Arts\Sign-Making".The seller is "huixang2" and is located in this country: CN. This item can be shipped worldwide.