SharkBite U850W50 PEX Tubing, 1/4-Inch (3/8-Inch OD) by 50-Feet, 1/4", White PEX TUBING: Flexible water pipe tubing for potable water distribution systems. Chlorine and UV resistant FLEXIBLE PEX PIPE: Expands and contracts with temperature changes and is freeze resistant PUSH-TO-CONNECT: Use with SharkBite plumbing fittings or plastic barb and brass barb fittings using PEX crimp tool or clamp connections RESIDENTIAL and COMMERCIAL: All SharkBite PEX tubing meets the same standards for commercial and residential plumbing applications MADE IN THE USA: Manufactured and tested in the USA