Compression Fitting Assortment Kit

Compression fittings join two lengths of tubing without soldering, using a nut, a ferrule, and the fitting body to compress a seal around the tubing as the nut is tightened. This assortment covers the tubing sizes most commonly found under sinks and on supply lines, packaged together in a labeled case for quick access during a repair.

Because the fittings are brass rather than plastic, they hold up under repeated tightening and won't crack the way some cheaper plastic compression fittings do over a few years of thermal cycling from hot and cold water. Brass also resists the corrosion that can develop on connections exposed to occasional moisture.

No soldering, torch, or flux is required to make a compression connection, which makes this kit useful for a repair done without specialized tools — just an adjustable wrench to tighten the nut down onto the ferrule. The labeled case keeps each size sorted, so there's no digging through a mixed bag of loose fittings mid-repair.