“Coverstock is the outer shell of a bowling ball. There are four basic types of Coverstocks on the market today: plastic/polyester, urethane, reactive, and particle.” In the center of a bowling ball, you will unexpectedly find a misshapen weight block, or core, which affects the spin of the bowling ball and how it curves as it rolls down the lane. The weight block is made of a combination of materials, including iron oxide, which is not specifically a recyclable material in some conventional recycling processes.
