Garden Hose Fittings may be used with Synthetic or Rubber Garden Hose. Mostly for industrial use in plant requirements etc. All female garden hose fittings are supplied with washers. Female fittings may be knurl or hex pattern. The hose must be cut squarely to length. Put a clamp on the hose. Push the hose on the fitting until it bottoms on the body of the fitting - tighten the clamp. All garden hose fittings are machined from solid brass