The Parker Hannifin 71898 .50" 90 Degree Elbow Male Connector Fitting for Pulsar® Pool Maintenance Systems is a compression-style fitting that installs in seconds without tools and provides a tight, sure, leak proof seal without clamps or adjustments. A unique grab ring for tube retention, coupled with a nitrile o-ring, creates a positive seal and assures good tube retention with only hand tight assembly. Designed for use with soft metal, glass tubing and compatible tubing.