Make training pleasurable with the prostate training kit. Prostate training made easy. Start with the Silicone Prostate Probe for a gentle massage on its own or during penetration. Graduate to the Silicone Prostate Probe with Enhancement Ring for a fuller experience. Turn up the excitement with the Beaded Prostate Probe; use it with or without the Multi-Speed Stimulator. Dimensions: 2" X 1" (stimulator), 4.75" X 1" (probe), 4" X 1" (beaded probe), 3.5" X 1.5" (probe with ring), 1.5" (ring diameter).