Watts LFA493 Brass Hose Barb x Male Pipe 5/8-Inch ID x 1/2-Inch MIP Lead-free brass is not more than a weighted average of 0.25% lead when used with respect to the wetted surfaces of pipes and pipe and plumbing fittings and fixtures Durable, lead-free brass is an excellent choice, with all barbs manufactured to highest quality standards and tolerances This barb fitting is easy to use for both contractors and the do-it-yourselfer Excellent for use with plastic tubing Not for underground use