High compatibility: TMC2208 is compatible with popular motherboards such as for SKR 2/Octopus V1.1/SKR V1.3 Motherboard Excellent heat dissipation and low heat: Compared to other TMC2208 stepper motor drivers on the market, our TMC2208 silent stepper driver uses a "gold plated" process to generate lower heat and has large area cooling locations to reduce temperature. Compared to other stepper motor drivers, our TMC2208 driver can reduce heat by 30%, even for extended periods of time. Ultra-Silent Stepper Driver: The TMC2208 stepper motor driver features stealthChop2 Mute technology, which reduces motor noise to a silent point at low speeds, ensuring noise-free operation, maximum efficiency and the best motor torque. spreadCycle allows highly dynamic movements. Motors controlled in PWM chopper mode run more smoothly, avoiding lost steps and chatter. color:As shown Material:silicone Package Contents: 5 x TMC2208 STEP/DIR Mode 5 x heat sink 1 x Line Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.