hi, we need Ag/Agcl sensor 500000 for ECG electrode production line. how much does it cost for each set ( male and female) do you have carbon sensor also and how much the price. how is the connectivity and specisification size 3.9mm Plating: Nickle plated Type: male ecg snap button Connector: 3.9mm male snap Feature: customize available Use: electrode pad or others Material: H65 BRASS Color: nickle color Size: 3.9mm,standard Product Type: BUTTONS Material: Metal Metal Type: Brass Button Type: Snap Button Technics: Plating Feature: Other Shape: Round Show More