Upgrade your 3D printer's performance with this set of 5 A4988 stepper motor driver boards, complete with pre-attached heat sinks for optimal thermal management. These driver modules are specifically designed to be compatible with RAMPS 1.4 boards, making them perfect for DIY 3D printer builds and upgrades. Each board features precise microstepping control and built-in overcurrent protection to ensure smooth and reliable motor operation. The aluminum heat sinks efficiently dissipate heat during extended printing sessions, helping to maintain consistent performance and extend the life of your drivers. These compact yet powerful drivers deliver the precise motor control needed for accurate layer positioning and quality prints. Perfect for makers, hobbyists, and 3D printing enthusiasts looking to build or upgrade their printer's motion control system. Installation is straightforward with clearly marked pins and standard mounting points compatible with most 3D printer control boards.