• Pure silver plated brass compression PL259 9mm plug with gold plated centre pin
• Silver: 2 microns
• Gold: 20k 99.99 %
• Impedance: 50 Ohms
• Frequency Range: 0-1000 MHz
• VSWR: 1:1 to 1:1.3 max
• Voltage: 500 VRMS

Very high quality connector from Yoteku in Japan - when only the best will do. Suit RG213 or similar size cable  

Fitting diagram supplied