The battery washers can prevent corrosion around the battery terminals, prolong battery life, for use with 6 and 12-volt battery
These battery corrosion washers can use for both top post batteries or cables and side post batteries or cables
The color coded for positive and negative terminals, red for +, green for - .
Size: inner ring can be removed to fit larger terminals, outer ring diameter is approx. 44 mm/ 1.73 inch; Inner ring diameter is approx. 20 mm/ 0.79 inch; Diameter of inner ring after dismantling: approx. 30 mm/ 1.18 inch (Please allow slight dimension difference due to different manual measurement.)
Package: 8 pieces battery anti-corrosion washers include 4 red and 4 green