The 563-1 medium pip is the best off speed blocking rubber, but it can also hit very well. Balls hit with 563-1 have same sink and some deception. Rubber is best for Chop, hit, block, excellent for service returns. Note that rubbers have more spacing between pips giving in creased control over incoming spin and service returns, the rubbers will have a slight decrease in ability to generate spin, but the speed is similar to standard version.