Suitable for pneumatic air hammers, pneumatic tools, compressor accessories and other industrial or maintenance scenarios. The size is 41×71.5mm, the inner diameter is 30x20mm, it is compatible with most air compressors and pneumatic air hammers, and the installation is simple and convenient. Made of metal, with anti-rust treatment on the surface, it is wear-resistant and durable, and is suitable for high-intensity pneumatic working environments. The unique self-locking structure can firmly hold the drill bit or tool to avoid loosening during work and improve operational safety. Quick clamping and release design saves working time and improves production or maintenance efficiency., Manufacturer: Briny River