1pc 16x25mm Spring Coupling Encoder Step Servo Motor Elastic Torque Thread Flexible Coupler Zero backlash and precise alignment: The monolithic design provides zero backlash through elastic deformation, delivering accurate shaft alignment for precision applications such as robotics and CNC machining. Elastic torque transfer: The flexible coupling supports smooth torque transmission while absorbing small shaft misalignments, reducing stress on connected components. Compact and compatible: Size 16x25 mm, one piece construction, suitable for encoder, stepper motor, and servo motor applications. Robust and reliable construction: Monolithic design minimizes wear and maintains alignment over time in demanding drive setups. Thread compatible flexible design: Designed to accommodate threaded shaft interfaces with a flexible coupling for reliable mounting. Practical use scenarios: Robotics: connect a servo motor to a robotic joint to achieve precise motion with minimal backlash. CNC machining: couple a stepper motor to a lead screw or ball screw axis to maintain accuracy under load. Encoder integration: link an encoder to a motor shaft to preserve accurate feedback and smooth motion control.