Feature: 1. Manual Control: The engraving machine manually adjusts the position of X, Y, Z axes as the starting point of engraving, and manually opens or closes the spindle 2. Offline Controller Er11 Addable: The Offline board can be connected to Grbl control board for engraving, no need to connect to a computer, and can directly access engraving files without file transfer 3. Heat and Short Circuit Protection: The engraving machine is composed of integrated driver chip, fixed heat sink, external fan and sturdy casing, has good heat dissipation and prolongs the service life, built in short circuit protection, not easy to damage 4. Support Software: This engraver kit is support for grblControl software, and support for WINDOWSXP WIN 7 WIN8 WIN10 home version, for LINUX system 5. Application: Suitable for wood, bamboo, paper, leather, plastic, PCB, acrylic, metal surfaces paint, metal surfaces plating, etc., not suitable for hard objects such as hard metals, iron, glass, 201 304 stainless steel, jewelry or silverware Specification: Item Type: CNC Engraver Material: Aluminum Alloy, Stainless Steel, ABS, PU Working Range: Approx.300x180x40mm/11.8x7.1x1.6in Frame Size: Approx.420x355x280mm/16.5x14x11in Screw: T8 Power Supply: 24V 4A Plug Power: 100V-240V AC Stepper Motor: Two wire 4 phase stepper motor 1.3A 0.25N.M Spindle: 775 spindle motor (12-24V) Engraving Material: Materials of standard shapes; Cylinders, curved surfaces, and special shaped materials (non standard materials) cannot be engraved Drill: Diameter: Approx.3.175mm/0.1in Center: Approx.0.1mm/0.004in Length: Approx.30mm/1.2in. Package List: 1 x Base2 x Bracket2 x Optical Axes2 x Rod2 x Side Plate1 x Z Axes Module1 x Power Adapter1 x Motherboard Assembly1 x Power Cable1 x Data Cable2 x Motor1 x Spindle Collet5 x Wire40 x Screw 4 x Nut4 x Washer6 x Hex Wrench2 x Wrench1 x Screwdriver1 x Instruction Manual9 x Cable Tie2 x Spring Nut10 x Drill Bit