Model Stepstick A4988 Quantity 4 Color White Material Semi-soft fiber FR4 Features 3D printer driver module w/ Reprap 3D Ramps Shield V1.4 can assemble the most popular 3D printer Specification The A4988 stepper motor driver carrier is a breakout board for Allegro's A4988 microstepping bipolar stepper motor driver. The driver features adjustable current limiting over current and over temperature protection and five different micro step resolutions (down to 1/16-step). It operates from 8~35V and can deliver up to approximately 1A per phase without a heat sink or forced air flow (it is rated for 2A per coil with sufficient additional cooling). This product is a carrier board or breakout board for Allegros A4988 DMOS Microstepping Driver with Translator and over current protection; We therefore recommend careful reading of the a4988 before using this product. This stepper motor driver lets you control one bipolar stepper motor at up to 2A output current per coil Application 3D printer driver module w/ Reprap 3D Ramps Shield V1.4 can assemble the most popular 3D printer English Manual/Spec Supply specification Packing List 4 x A4988 stepper motor driver module 4 x Heat Sinks