Malleable Iron 45 Degree Angle Liquid Tight Connectors are used with Liquid-tight Flexible metal conduit or Liquid-tight Flexible non-metallic conduit Type B with respective trade sizes. When connectors are terminated in threadless openings, the included sealing washers provide liquid tight seals. The heavy duty locknuts included with every Orbit liquid tight connector ensures the continuity of the grounding. In damp locations, the connectors are also of excellent corrosion protection with zinc electroplated. The trade size varies from 3/8" to 4".