Professionals Metallic Stainless Steel Power Tools Cock Rings for harder and stronger erection. The Cockring Ribbed by the quality brand Steel Power Tools is a sleek, modern cock ring made of high grade stainless steel. This solid ring - ribbed for extra pleasure - increases the stamina and endurance of the erection. The Cockring Ribbed is body-safe, built for pleasure and built to last. Explore your harder side with Steel Power Tools PRODUCT FEATURES CHARACTERISTICS↵MATERIAL- 100% STAINLESS STEEL↵DIAMETER- 4 cm - (1.57 inch)↵↵NOTE-WARNING - Do Not wear a cock ring for more than 30 minutes at a time.