Package Includes: You'll receive 2 keyboard cleaning brushes, each 9 cm long and 2 cm wide. The brush length is 3.8 cm. Perfect for small spaces like keyboards and computers. Easy to Use: Ideal for cleaning electronic equipment such as PC cases, screens, motherboards, phone buttons, etc. It's retractable for better brush head protection. Material: The keyboard cleaning brush is made of high-quality ABS plastic and wool material. It's high-temperature resistant, lightweight, anti-static, and durable. The bristles are very soft and can reach the smallest gaps in the keyboard without leaving scratches. Features: It uses a retractable brush head design, which can hide the brush when not in use, making it smaller and more convenient to carry and store. Application: The cleaning brush is suitable for cleaning all kinds of dirty corners such as CPUs, mobile phones, computers, keyboards, motherboards, cameras, hardware, etc.