Post to Side Terminal Adapters. They are designed for top post batteries and can convert and extend to 3/8" side post battery terminals.
Compatibility and Specifications: The adapters are suitable
for top post batteries with a 17mm cone/tapering positive (+) and a 16mm cone/tapering negative (-). When converted to side post terminals, both adapters feature 3/8" thread female connectors.
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Material: Lead
Color: Silver
Size: 17mm positive (+) and a 16mm negative (-)