3D Printer Kit with RAMPS 1.4 Controller + Mega 2560 board + 5pcs A4988 Stepper Motor Driver with Heatsink + LCD 12864 Graphic Smart Display Controller with AdapterProduct Specification:(1) Mega 2560 R3 Board(2) RAMPS1.4 is designed to fit the entire electronics needed for a RepRap in one small pack..