I thought for ages that it was just a myth about a great orgasm. I used everything over the years to try and hit the spot. Hammer handles, wine bottles, deordeant can and never got any joy. Then one day I used my wife's shampoo bottle that was tapered in the middle and without even trying too hard I'd found my spot and had a right hand covered in pre-cum and a very curly set of toes. I definitively recommend it for when a normal wank won't do. Only downside is it addictive, you want a bigger climax each time