1.Increases Blood-Flow for Strong， Healthy Erections2.Made of high quality medical ABS3.metal electrodes: stainless steel PVC line length: 40cm probe diameter: 12mm 4. It can be used with tens unit（2-pin plug hole: 2.0mm）5.Note: Look the desciption below for detail informationItem specificsItem Type: Massage & RelaxationBrand Name: KONMEDMaterial: Medical plasticsApplication: BodySize:weight 40gModel Number: KM502weight: 40gprobe material: medical ABSmetal electrodes: stainless steelPVC line length: 40cmprobe diameter: 12mmis_customized: YesProduct DescriptionMax diameter: 2.0cmMin diameter: 1.2cmAvailable length : 9.5cm2-pin plug hole: 2.0mm