Guaranteed Quality & Consistency For The Epoxy Flooring Contractor. Key Features of Looped: Ideal for applying cement urethanes. Often used with aggregated coatings. Great for spreading and back-rolling. Assurance™ covers are designed to meet the needs of flooring contractors. They are extremely shed-resistant and provide a consistent quality you can depend on. All 18" covers fit 1/4" axles and come with 1/4" (white) end caps. All 24" & 36" covers fit 3/8" axles and come with black 3/8" end caps.