Features: Equipped with two diameter brush heads of 8mm and 15mm, the 8mm brush head is suitable for narrow gaps such as tile jointing and door and window sealing strips, while the 15mm brush head can efficiently clean wide areas such as skirting boards and floor expansion joints, meeting different gaps cleaning needs. ​ Clean without dead corners; The bristles is treated with a special dyeing and fixing process, and do not fade during use. Even if they come into contact with cleaning agents, they will not contaminate the cleaning surfaces. ​ The bristles is soft, capable of gently sweeping away light dirt such as dust and hair, as well as penetrating deep into crevices to remove stain; More suitable for gaps cleaning of vulnerable materials such as paint, leather, plastic, etc., to avoid scratching the surfaces. The surfaces of the bristles have undergone special treatments to prevent discoloration and rusting during use, and will not contaminate the cleaning area, ensuring that the surfaces of tiles, stones, and other materials is as clean as new. The circuit board cleaner brush can remove dust and debris from the keyboard, and perform well in cleaning small gaps such as the motherboard, headphone, and charging port Specifications: Material: Aluminum Brush Head Width:15mm/0.59'',8mm/0.31'' Package Includes: 2Pcs Cleaning Brush note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.