Product Info Catalog Plumbing Pipe & Fittings Compression 4PC 1/2" Sleeve/Ins Kit 4PC 1/2" Sleeve/Ins Kit Request a Quote UPC: 52151170064 SKU: 207864 Model Number: 17-0949 4 Piece, 1/2", Hard Nylon Compression Sleeve & Brass Insert Kit, Carded.