Material: The penis plug is made of high-quality metal. Dimensions about 90 mm long About 10mm in diameter Highly polished penis plugs are well-made: clean and polished surfaces. Weight: about 30 grams Penile plug, can also be used as a penis muscle training device for hard and long-lasting erections Package includes: metal penis plug x 1 prompt: 1. Before and after each use, please clean. 2. The effect is better when used with lubricant. 3. It is recommended to use only water-based lubricants. Silicon-based lubricants can cause dissolution reactions. 4. Please allow dimensional deviation.