General description 3X NEMA 17 Stepper Motor Driver Kit includes MKS SERVO42C PCBA boards designed for ultra-quiet operation, making it ideal for CNC applications. This kit is perfect for enhancing your DIY projects with reliable and efficient motor control. Technical specifications Material: Metal + Plastic Measurement allowed error: +/- 1-3 cm Package Contents 3 x MKS SERVO42C PCBA 3 x Motherboard Adapter Board 12 x 304 Pan Head Screws 12 x ABS Insulation Column (7x3mm, Inner Diameter 3.2mm) 3 x 6x2.5mm Radial Magnet 3 x 2.5mm Hex Key 3 x PCBA to Motor Cable 3 x Motherboard Cable