G1/4 external thread standard interface, compatible with air compressors and pneumatic tools, no need for adapter. Quick insertion self-locking structure, lock when pushed in, disconnect when pulled out, leak proof and safe. Hardened steel galvanized/nickel plated, pressure resistance 1.0-1.5MPa, industrial grade durability. Suitable for pneumatic equipment such as air compressors, pneumatic wrenches, paint guns, and dust blowing guns. Ready to install and use, compact size, suitable for frequent plugging and unplugging operations., Manufacturer: xiaoshitou