Zen Toolworks CNC 7x12 3D Printer/Milling Kit Total Travel Capacity: 12"(X) x 7"(Y) x 5"(Z) Inches Frame Constructed of Sturdy PVC Material Brand New Dual Shaft Nema 17 Stepper Motors Included Accurate M8 x 20mm (F8)Lead Screws on X and Y, M8x8mm(F8) on Z The Spindle and Extruder are NOT included.