i ordered an lightning audio capacitor distrubution block that accepts 1/0ga in, two 4ga out, and two 8ga out. when it arrived in the mail, i could barely fit in 0/1ga but it fit 2ga perfectly fine. as for the 4ga out holes, not even close. biggest size that i could fit were 8ga. and the 8ga holes were basically speaker wire size

idk if lightning audio overrates their equipment but becareful when choosing lighting audio installation products cause their 4ga can mean 8ga in reality and so on.