The Seymour Midwest 18″ Spiked Roller with 2″ supersharp tines is built for releasing trapped air in thick, high-build coatings and self-leveling overlays. The extra-long tines penetrate deep to break surface tension, helping eliminate bubbles and promote proper flow for a smooth, uniform finish. Designed for durability and performance, it’s ideal for epoxy, urethane, and cementitious applications requiring deeper agitation.