Urethane, Ebonite, Nerf, TENPIN, and LANE are all materials used to make bowling balls. Urethane is an elastomeric polymer that is known for its durability and flexibility. Ebonite is a type of hard rubber that is often used in the production of bowling balls. Nerf is a soft foam material that is used to make lightweight bowling balls. TENPIN is a type of synthetic resin that is used to make bowling balls with a glossy finish. LANE is a type of plastic that is used to make bowling balls with a smooth surface.