Protective Washer Color Gray Connection Type Bolt Housing Material Felt Features Eliminates Battery Corrosion for Increased Cranking Ability Oil-Based Formula that does Not Dry or Evaporate Stops Battery Corrosion for the Life of Battery Attachment Type Top Compatible Product Type Battery Includes (2) Top/Side Post NCP2 Battery Terminal Protectors Material Felt Overall Depth 1 3/4 in Overall Height 1/8 in Polarity Neutral Width 1 3/4 in