The E-Stim Systems Large PenisPlug is the largest of the range, measuring 55mm long with a 7.65mm shaft and features a distinctive Diamond shaped head which is a hefty 9.5mm in diameter at its widest. Designed and Engineered for those who fancy something a little different from standard urethral sounds and produced from aircraft grade aluminium. With the super smooth, super shiny mirror finish and rounded tip the PenisPlug will slip in easily while the tapered Diamond head design allows the urethra to gently open up and then close around it holding the PenisPlug in place. Every one of the PenisPlugs are designed with stylish grooving in the base area to help with gripping them with lube covered fingers and they add to the sensation when in contact with the head of the penis, and they are also fitted with an industry standard 4mm socket in the base. Specifications Size (Diameter) Shaft 7.65mm Diamond Head 9.5mm Base Diameter 24.5mm Overall Length 55mm Insertable length 44mm Weight 19g Connection 4mm Cleaning Cleaning is simple and easy, just wash them off in warm water and a light detergent or sterilising fluid or as they are solid aluminium and unlike other cheaper sounds, they are safe to boil. Make sure the PenisPlug™ is fully dry before storage. If you have any issues with your PenisPlug, just contact us as they covered by E-Stim Systems Lifetime Guarantee. Preparation Because of the nature of Urethral play cleanliness is paramount so we suggest you clean the PenisPlug immediately prior to use and then use sterile lubricant during play.