Inverted, short pips, long pips, anti, and hard rubber are the different rubber types offered by PPD. The rubber type is the critical equipment choice you have to make that then determines the amount of spin you can produce (or deflect). Your rubber choice will also affect the speed of your shots, but speed is also highly dependent upon the blade. Besides the rubber type, each rubber normally comes in 2 or more thicknesses, each with varying effect on the speed, spin, and control of your shots. If that wasn’t enough, the sponge layers come in a variety of hardnesses, which also affects the speed and control of your shots. Call or email us if you need advice on which rubber sheets are best suited for your style of play.