Bi-Polar Electro Lined Open Chamber SPT

Designed for V2000 and Tremblr owners but also great for use with the SeriousKit Milker. Lined with conductive rubber for the length of the shaft – with an open chamber at the cap end. Venus 2000/Tremblr users will need one of our connection hoses, sold separately. This new version of the electro lined open chamber SPT is bi-polar - so is ready for e-stim without the need for an additional contact. It can be used mono polar if required, use just one of the contacts. If using with a V2000 or Tremblr: lube before use with any water based gel. The SPT is fitted with 4mm banana sockets for easy connection (cable not included). Sizing: Sizes: 30mm, 40mm (standard) or 50mm. The size refers to the internal diameter of the acrylic tube. 40mm is by far the standard size. Due to the way the milker works the sizes are not that critical - as long as the penis will fit inside the acrylic tube when erect. Diameter is calculated by dividing the circumference by π (3.142)