Adafruit Feather M0 Basic Proto -...
30 cm Linear Axis (8 mm Diameter)
This is a high-quality metal which serves as a coupling device for actuators with a diameter around 5.3 mm. See description for more details about the product. Add to cart now!
This mounting bracket is suitable for your HC-SR04 ultrasonic sensor. This bracket is very handy and it can protect the module for damages. You can add it to your project for a good price.