ITEM NAME:10pcs Adjustable Plastic Holder Bracket for HC-SR04 Ultrasonic Module Product Description Description: 10pcs Plastic Holder Bracket Accessories for HC-SR04 Ultrasonic Sensor Module 10pcs Adjustable Holder Bracket Parts for HC-SR04 Ultrasonic Sensor Module Specification: Material: Plastic Suitable for: HC-SR04 Ultrasonic Sensor Module Size: approx. 45 X 34 X 16 mm/1.77 X 1.34 X 0.63 in Adjustable Height: Yes Included: 10 X Holders 20 X Screws.10pcs Adjustable Holder Bracket Parts for HC-SR04 Ultrasonic Sensor Module. Suitable for: HC-SR04 Ultrasonic Sensor Module. Adjustable Height: Yes. Material: Plastic. If item is defective after 3 months, you can still send it back to us.