the like material. Drill bit can not engrave hard metal, jade or other hard materials. NOTE: 1. The machine is DIY Kit, Need To Assemble By Yourself.  2. Materials can be engraved: wood, bamboo, paper, plastics, leather, rubber, horn, sponge sheet or other flammable plastic (such as phone case, mouse, pencil, name card, wallet, plastic comb). 3. Materials can’t be engraved: metals, glass, stone, ceramics, jewelry, silver, reflective material, translucent & transparent material. Specifications: Model: CNC3018PRO Material: Aluminum Alloy ' Phenolic Resin Main Color: Black ' Silver Power Supply: AC 100-240V Output 24V 5.6A Plug Type: US / EU (Optional) Supported OS: Windows XP / Win 7 / Win 8 / Win 10 (32/64) Supported Formats: jpg / bmp / png Communication Port: Micro USB Engraving Area: 300 x 180 x 45mm Frame Size: 400 x 330 x 240mm(Not include the motor protrusion part) Table-board Size: 300 x 180mm Spindle: 775 Spindle Motor 24V: 8000r/min Spindle Chuck: ER11 Step Motor: Fuselage length 34mm, Current 1.33A, 12v. Torque 0.25N/M Drill Bits: Tip 0.1mm, 20 degree, diameter 3.175mm (Contains 10 pcs) Software: GRBL Control  Engrave Mode: Image Engraving, Text Carving, Scanning Carving, Contour Carving, Pixel Carving Can Not Carve Objects: All metals, glass, stone, ceramics, jewelry, silver, reflective material, translucent & transparent material. Can Carve Objects: All wood, bamboo, paper, plastics, leather, rubber, horn, sponge sheet, etc. Package Size: 45 * 23 * 17cm / 17.7 * 9.1 * 6.7in Package Weight: E5244US: 6650g E5244US-1: 7000g E5244US-500: 6810g E5244US-2500: 6850g E5244US-5500: 6940g Package List:  (DIY Kit, Need To Assemble By Yourself.) 1 * DIY CNC Engraving Machine Kit 10 * Drill Bits 1 * ER11 Spindle Chuck