Twin Cage SPTFitted with polished aluminium tube electrode at the base and a twin conductive rubber glans cage for the tip. Adjustable telescopic length to optimise sensation. The SPT is bi polar which means it can be used on its own and does not require another electrode to complete the circuit. Sizes 40mm or 50mm diameter. Scroll down for sizing information. An adaptor kit is required (+18) for use with the original Surge Milker. Sizing: This SPT has an

The tube is fitted with a standard ‘click fit’ female connector compatible with hand held vacuum pumps

Internal diameter of lower stage (40mm or 50mm): In this model of hand pump cylinder 40mm is by far the standard size (this is because the 'Mushroom Head' cylinder is designed to have a closer fitting lower stage in order to encourage maximum growth for the head of the penis - you must still fit comfortably inside the lower stage)

Neither V2000 or Tremblr receivers have connections for electro stim cables

The SeriousKit Stainless Steel Milker Vessels (without lid) have the following dimensions:

Sizes: 40mm (standard) or 50mm

The standard SPT is lined with soft rubber that responds to the vacuum and receives a constant wet lubricant feed

Tub of K-lube

Lubricant supply kit

Tremblr receivers have a single standard diameter

Choose between black or white silicone

Sizes are not that critical - as long as the penis will fit inside the acrylic tube when erect

The head of the penis is drawn through the constriction with each pulsation of the milker