The Butt Bolo, CB279 has proven to be very popular since we introduced it in our last catalog supplement, and now we've added a new bolo style. The Solo Bolo has one larger metal butt knob, twice the size of the Butt Bolo's knobs. The knob is connected to the 2" aluminum cock ring by a 7" long rubber tube. This one has gotten high praise from the many who have already bought it in our store.