1. Suitable for NEMA 17 42 series stepper motor approx. 42 x 42mm / 1.7 x 1.7in.
2. Can play a good fixed role, make parts not easy to loose, more convenient operation.
3. Made of high quality aluminum materials, which makes it more durable and you can use it for a long time.
4. A direct replacement for the old and broken one, which is very convenient, no complicated steps.
5. With easy installation, and there is no need to waste your times, very convenient.