Dr. Joel Kaplan Prostate Probe and Ring. Silicone prostate probe with support ring.Stimulation and support in one. Pliable and durable. Safe and pure for body and pleasure. Made using phthalate free materials: Silicone. Bulk weight 3.3 ounces. 3.5 inches by 1.5 inches probe. 1.5 inches diameter ring.