The ElectraStim Rocker Range is the answer to truly hands-free anal play. Thanks to our unique embedded inputs, you can connect a stimulator without having the pins jutting out at an awkward angle &ndash, a common issue with electro sex toys. You can rock, grind, better control pressure and improve contact with the body.The tapered shafts feature seamless bi-polar conductive silicone contacts that activate when connected to any ElectraStim Stimulator. The deeply ridged texture of the shaft contributes to the intensified internal sensations that electro butt plugs are famous for, targeting the sensitive nerve endings near the skins surface for a multi-level erotic experience.ElectraStim Rockers are available in three sizes to cater for different experience levels and offer easy progression for anal sex toy beginners ready to try bigger things. The shafts are tapered for easy insertion as well as creating an auto-thrust effect during use with a stimulator.Made from 100% medical grade silicone.Available in the following sizes:Size Insertable Length DiameterWidth CircumferenceSmall 105mm4 30mm1.2 94mm3.7Medium 115mm4.5 40mm1.6 125mm5Large 130mm5 50mm2 160mm6.2THIS ITEM IS AN ELECTRASTIM ACCESSORY AND YOU WILL NEED TO PURCHASE AN ELECTROPLAY MAINS PACK SUCH AS N8719, N8720, N8739, AND N8738 TO USE THIS WITH.