Note: We ask that Please double check and be sure you are buying correct plug size. Plug is 3.5mm and works with 3.5mm jack.  This is a 4 Pin Lead Cable(Like in the Picture) -A Specialty cable allowing you to use up to 4 Pads total! The lead wire connects to a physiotherapy machine or TENS Unit with a 3.5mm jack connector

Measurement :

• Electrode wire length : about 1.20 ~1.30 m
• 4 pin each Cable
  
• head/plug diameter:  3.5 mm 
  
• pin diameter: about 2.00 mm