DeoxIT Shield S100L and DeoxIT D100L 1.6ml 100% solution with brush applicator - 1 each 1 each of DeoxIT and DeoxIT Shield DeoxIT - Improves Conductivity Deoxidizes, Cleans & Preserves DeoxIT - Reduces Intermittent Connections, Arcing & RFI, and Wear & Abrasion Shield - Creates a long lasting barrier against oxidation and corrosion. Shield - Ideal for severe environments (humidity, salts, pollutants, sulfur, etc.)