This is by far the greatest probe ever. It is the perfect firmness and softness. It’s strong enough to advance yet soft enough to maneuver the turns. The feeling as it probes further and further is amazing. I find the key elements in using this probe are, a good clean out first, to use a good quantity of lube (grease) and advance slowly. I highly recommend this colon snake / depth-probe. The best toy I ever bought.  April 13, 2015