Catch is a gripper powered by an SG92R servo. It uses a PWM signal to drive the gripper gear, enabling clamping and releasing operations. The structure is compatible with Lego 8mm round holes, allowing you to combine it with other Lego components to build creative control structures, such as robotic arms and gripper carts. Note: The gripper's opening and closing angle is 90°. Please control the servo rotation angle to 0–45° (PWM: frequency 50Hz, 0–45° = pulse 0.5ms–1ms) to prevent blocking and avoid damaging the servo. Product Features SG92R steering gear PWM signal drive Compatible with Lego hole structures Jaw opening and closing angle: 90° Compatible with RoverC Input voltage: 4.2–6V Supports development platforms: UIFlow, MicroPython, Arduino Included 1x Catch Unit (Built-in Servo SG92R) 1x HY2.0-4 adapter 1x RoverC.Pro Connector