Feature: TMC2208 uses single-axis stepper motor driver chip, power tube built-in drive current 1.4A peak current 2A, voltage range 4.75V-36V, 256 subdivision; Flexible microPlyer interpolation unit, which provides up to 256 microsteps/step resolution, perfect for sinusoidal control even with limited pulse rate; since stealthChop fine music technology is widely used in 3D printing, these components are also Designed to be compatible with existing 3D printer electronics, eliminating the need for costly redesigns. Both components have pulse/direction inputs and can operate completely independently. Configuration is achieved through digital input. Can replace the original TMC2100, reduce heat, especially suitable for 3D Printer Material: Metal Qty: 10/20pcs Package List: 10/20 x Stepper Motor Driver Module 10/20 x Heat Sink 1 x Screwdriver