SoldWaterproof twist-on wire connectors pre-filled with non-hardening silicone sealant. Filled connectors are meant for outdoor applications, irrigation systems, and landscape lighting. Corrosion proof materials. Listed UL 486D as a sealed wire connector system. Protects wires in damp, wet, rain tight, and submersible locations. Easy one-step installation, no pre-twisting required. As: Case of 200