high quality,reasonable price 1. 6p4c, 6p2c available.2. Contacts are nickel plated. Shell is PC material3. Phosphor bronze with 6 u" to 50 u" gold plate.4. Accept 22-26 AWG solid with a insulation diameter of 0.4-0.64 mm.5. Certificate: CE, ROHS, ISO90016. Standard: TIA/EIA568A/B RJ11 modular plug