Oatey 240018 Cherne 1-1/2-Inch Test-Ball Plug Same great Test-Ball plug in bulk packaging. Preprinted bag designed for use with peg hook displays. Bulk Test-Ball plugs MUST be ordered in quantities of 24 plugs. Made of natural rubber for excellent expansion and memory.Seals both round and out-of-round pipe Fits easily through test tees, sanitary tees, floor drains and other "tight" situations Broader expansion range than mechanical plugs. Zinc-plated steel chain and ring handle acts as an anchor to prevent plug from sliding down a line