Product Info Catalog Plumbing Pipe & Fittings Compression 4PC 5/16"Sleeve/Ins Kit 4PC 5/16"Sleeve/Ins Kit Request a Quote UPC: 52151170040 SKU: 207863 Model Number: 17-0917 4 Piece, 5/16", Hard Nylon Compression Sleeve & Brass Insert Kit, Carded.