The Cobalt Tower Erection Enhancer and Anal Probe from the Master Series. The Cobalt Tower Erection Enhancer and Anal Probe helps men to maintain a longer lasting erection, coupled with exciting anal and scrotum pleasure. It features a ribbed anal insertion arm for deep probing, with a snug harness for the cock and balls. The flexible Thermoplastic Rubber TPR material stretches to fit and bends with the body. Now you can enjoy triple the stimulation while experiencing a harder, bigger, longer lasting erection. It is your domain. <br /><br />Measurements 5.75 inches in total length, 4.5 insertable, 1.3 inches in diameter at widest point. Cock ring measures 1.25 inches in diameter unstretched. Material Thermoplastic Rubber TPR. Color Blue.