I use them at low voltage and low current. They work fine in my application. The quick connect terminals are 4.75mm wide, 0.6mm thick and approximately 6mm long. They are marked as KCD1, which appears to be from Jinghan Switch Electronic. They are also marked as 10A 125VAC 6A 230VAC. They are marked BK on the other side of the packaging. They appear to be "KCD1-116B/2P" switches made by JHswitch, which has a lot of detail on dimensions and electrical specifications.