Check the listing for details. Nema 14 Adapter For THK KR20 Linear Actuator + Screws, For Stepper Motor. Condition: New. Listed at 24.00 USD. This Nema 14 adapter is designed for use with THK KR20 linear actuators and comes with screws for easy installation. It includes everything you need to adapt a Nema 14 stepper motor to the THK KR20 for precise linear motion. Items pictured in the first image are what you will receive: 1x Nema 14 Adapter, plastic, 100% infill, solid PETG 4x M3 length 18mm screws + locking washers (grade 12.9 oxide) 4x M3 length 8mm screws (grade 12.9 oxide) 4x M3 nuts Please note: the adapter as configured will accommodate a maximum motor shaft length of 22mm, as illustrated in the last 2 images included for reference. You may adapt longer shaft steppers with the use of additional spacer washers. Some Nema 14 may not be M3 threaded, however many are. This listing only includes the plastic adapter + screws + nuts + washers. I have included the necessary screws to adapt the motor to the THK KR20 linear actuator to save money and time and avoid you having to order separate screws for which you would have to pay shipping. It is suitable for use with Nema 14 stepper motors and provides a secure connection for reliable operation. The adapter is made from 100% solid PETG, a strong material and is built to last, ensuring that it will provide consistent performance for an extended period of time. Please contact me if you have any questions or you need a custom design for your different application.