Earl's Auto-Fit design provides the reliability and appearance of Swivel-Seal, but are non-adjusting and less expensive.

With the conventional single nipple hose end design, the nipple actually threads into the hose and is retained by the socket. The thread forms a part of the seal-and a possible spiral leak path.

The Auto-Fit nipple is barbed rather than threaded. In assembly the nipple is pushed into, rather than threaded into, the hose. The hose is compressed between the nipple and the socket, sealing at the barbs. Hose retention is positive (the same as Swivel-Seal), and there is no spiral path for possible leaks.

Auto-Fit hose ends are available in anodized and unanodized aluminum. These lightweight aluminum hose ends are suitable for most applications.