Set includes: pliable and durable curved prostate probe for comfort and reach; 3 sturdy, stretchy all-purpose rings; and a penis pump with flanged base for superior suction and EZ-squeeze bulb with a quick air release valve and a removable body safe donut for a secure seal. Probe measures 4.5 in. by 1 in. Ring diameter is 1 in. Cylinder measures 7.75 in. by 2.25 in.