Features: Quantity: 20 pieces. Colour: silver. Thread: M5 4mm. Pressure resistance: 0-1.6 MPa. Length: 16mm. Weight: approx. 64 g. Contents: 20 pneumatic male connectors. Note: 1. The color of the actual item may vary from the pictures, depending on your computer's display and brightness settings. 2. Since measurements are taken by hand, the sizes indicated may vary slightly. Thank you for your understanding.