The JCM Industries KEL300 Coupling Restrainer is designed for asbestos cement pipes with a diameter of 4 inches, specifically accommodating pipe sizes ranging from 4.80 to 5.10 inches. This robust restrainer is constructed from high-quality materials to ensure durability and compliance with industry standards. It effectively secures the coupling, preventing dislocation and ensuring a reliable connection. Ideal for use in municipal water systems and other applications requiring secure pipe fittings, this product is a trusted choice for professionals in the field.