‘Urethral Sound’ Pump & Stim CylinderThe length of the sound is adjustable to allow easy insertion to varying depths. The cylinder is bi polar, with a ring electrode at the base, so it can be used on its own. Simply choose an internal diameter (50mm 60mm) and a diameter for the sound (5mm or 6. 35mm). Scroll down for more sizing information. Sizing: Internal diameter (50mm or 60mm): In our hand pump cylinders 50mm is by far the standard size. Due to the way hand pumping works the sizes

Additional lower lengths are available to ensure correct sizing or for use with multiple players

The kit comes with a See-Through SPT

then add a couple of centimetres - this is to allow for the fact that the vacuum in the SPT will lengthen the penis slightly

The twin tubes provide carefully engineered suction and electro-stimulation from one testicle to the other

If you measure the erect distance from base of penis to groove under the glans that will position the electrode under the groove

This package includes everything you need to get going

The penis ring electrode also functions as a guide to allow accurate alignment when using a sound

diameter at base 33cm

The cup is 40mm deep and will accommodate a wide range of sizes

Available in black/grey silicone

It is supplied in black silicone rubber with two push-fit connectors

40mm or 45mm constriction for 50mm SPTs