Lug Nuts from Evolved Novelties. For stronger erections that lasts longer, get the right hardware for the job! Slip a stretchy Thermoplastic Elastomers TPE rubber lug nut all the way to the base of your member and see the results for yourself in minutes. These hard working rings use a simple design that works to increase blood supply where you need it most, giving you the torque to blow her mind during love making! Enjoy them in the shower or bath as they are completely waterproof and clean with Zero Tolerance Toy cleaner and a warm water rinse. Small nut, Medium nut, Large nut length: 2.17 inches, 2.46 inches, 2.61 inches. Depth .75 inch, .75 inch .75 inch. Width 1.91 inches, 2.17 inches, 2.33 inches.Weight 2.2 ounces. Set of 3 lug nut shaped cock rings. 3 sizes depending on your mood. For stronger, longer lasting erections. Great for couples play. Unique hexagon hardware shape cock rings. Finished to look like black painted metal. Made from soft and stretchy Thermoplastic Elastomers TPE. Phthalate free and latex free. Waterproof