Treat your sub like the dog that they are with this dog bone bit gag. The gag is made of rubber with a leather head strap. There are several nubs that surround the dog bone. The strap fits around the head and closes with a buckle. A padlock (optional) can be placed on the buckle for additional security. The bit measures 6.5" in length and 2.5" in width (at its widest point).