WD-40 is silicone-free - no messy, gummy residue. Protects metal - WD-40 lubricates and protects against moisture and corrosive elements with an invisible barrier. Loosens rusted parts and frees sticky mechanism. WD-40 penetrates deep to free up frozen or rusted parts and fasteners. Keep controls and linkages working freely. Displaces moisture - gets under water, drives it off and keeps it off. WD-40 is a nonconductor. Use it to dry out electrical and electronic equipment. 24 per case.