These caps offer a quick, easy way to cap pipe ends, test pipes and clean-outs. Made of flexible PVC, their durability causes them to be suitable for above-ground or underground use. The Plumbers choice couplings have found wide acceptance among sewer and Plumbing contractors and municipalities because of their quality and ease of installation, Used for all types of in-house and sewer connections: drain, waste, vent piping, house-to-main, repairs, cut- ins, conductor, roof drains and increasers-reducers. Made of tough elastomeric polyvinyl chloride (PVC), the flexible couplings are strong, resilient and unaffected by soil conditions. They are also resistant to chemicals, ultra-violet rays, fungus growth, and normal sewer gases due to the inert nature and physical properties of the PVC material. Color: Black.