 Because spinners do not want the ball to grab onto the lane with its surface, they often use "plastic" bowling balls - balls with the older polyester cover-stock popular in the 1970s and 1980s, and commonly used as house balls today - in comparison to the widely used polyurethane, "particle" (polyurethane with nigh-microscopic glass spheres or other hard material throughout the coverstock) and "reactive resin" balls ("reactive resin" is itself polyurethane manufactured using a process to leave microscopic pores throughout it, essentially, a hard sponge) used by bowlers who desire a ball that will grip the lane and roll strongly.Additionally, because the chances of injury are somewhat elevated with this style of bowling, as well as the advantage of ball deflection with this style, the spinner will have a tendency to use lightweight balls between ten and twelve pounds.Some hook bowlers can also spin and roll the ball at the same time, keeping the ball in-between the X and Y axis.