4 Conductive Rubber Loops with Cord Locks - For Tens Estim Erostek - 3.5mm-4mm OD x 1.75mm ID 
 
Set Includes:
4pc Pieces of 8" Conductive Tubing Loops - 3.5mm - 4.00mm OD (outside diameter) x 1.75mm ID (inside diameter)
4pc Quality Spring Type Cord Lock Clips
Your Choice of 1 - 2.35mm Shielded, 2.5mm Mini Phone or 3.5mm Phone Jack Tens Cable Lead Electrode Plug with 4 - 2mm Male Pins (this makes for a tight fit)

The 3.5mm Cable will allow you to use Zeus and Rimba Accessories with the Folsom or Erostek Electrostim units.

The 2.35mm Cable is perfect for Tens 3000 or Tens 7000 and Most Roscoe plus many others that require a Shielded Cable