Underground wire connector assortment. Specifically designed to secure and protect wire connections in a wide variety of wet location and direct burial applications. Manufactured with an extra thick thermoplastic shell for extreme durability and reliable connections. Exceed UL (Underwriter's Laboratories) 486D test standards. Non-hardening sealant completely seals out moisture to protect against fungus and corrosion. Sealant is stable down to -40 deg (degrees) C (Celsius). Swept-wing design for comfort, live-action square-wire spring, hexagonal shape for standard nutdriver. Shell rated for 105 deg C, flame-retardant. Contains 5 gray/orange #61 connectors (minimum combo of 1 #20 AWG with 1 #18 AWG, maximum combo of 2 #12 AWG & 1 #10 AWG) and 5 gray/red #62 connectors (minimum combo of 2 #18 AWG, maximum combo of 2 #10 AWG). UL and CSA (Canadian Standards Association) listed.