This is model D571-P09-Y05-B, 1.0mm connector is rugged and durable, featuring a 360° raised grounding ring and operational temperature rating of -55°C to +165°C. 1.0mm connectors provide mode-free operation through 110 GHz, offering well-matched impedance, excellent repeatability, and the industry’s lowest VSWR (1.2:1), insertion loss (0.6 dB), and RF leakage (≤ -100 dB).