Insertable Length: 25 mm (1"). Diameter: 40 mm (1.6"). Connector Size: 2 mm.Our Halo clitoral stimulator is a bi-polar clitoral electrode that offers a little something different for fans clit stimming. Use the petite contact at the tip for firm, sharper sensations during pussy torture or activate the larger contact for softened stimulation and a more sensual experience. The bi-polar design allows you to use one or both contacts at once, so you can choose to use Halo alongside any uni-polar electrode. An insulated base keeps stimulation exactly where you want it.The conical shape lends itself to being rolled along the clitoral shaft for intense direct stimulation and is also ideal for shallow penetration to give you gentle vaginal contractions. For the best possible experience we recommend that you apply some water-based lubricant to the surface before play.