The main parameters as follows: 1. The max electricity flow: 450amp 2. The Volte: 12V/24v.. The Aocheng battery terminal boot, are made by PP. And we provide it for China and European market, such as FIAT, VW, etc.The main parameters as follows:1. The max electricity flow: 450amp2. The Volte: 12V/24v3. Cable size: Fit 25-75 battery teminal Battery Terminal Cover