Bulkhead connector for routing battery cable safely through a firewall or body panel. 3/8-16 threaded stud, rated 6V to 36V. Mounting hardware included. Sold each.Spec Sheet: Allstar Spec SheetCompatibility:Fits a 1.25in diameter mounting hole, 3/8-16 stud, rated 6V to 36V systems. Sized by stud and hole spec, not by vehicle make or model.FAQWhat's it used for?It's used for running battery cable safely through a firewall or any body panel.What size mounting hole does it need?It needs a 1.25in diameter mounting hole.Is mounting hardware included?Yes, mounting hardware is included.What voltage range is it rated for?It's rated for 6V to 36V systems.{"@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [{"@type": "Question", "name": "What's it used for?", "acceptedAnswer": {"@type": "Answer", "text": "It's used for running battery cable safely through a firewall or any body panel."}}, {"@type": "Question", "name": "What size mounting hole does it need?", "acceptedAnswer": {"@type": "Answer", "text": "It needs a 1.25in diameter mounting hole."}}, {"@type": "Question", "name": "Is mounting hardware included?", "acceptedAnswer": {"@type": "Answer", "text": "Yes, mounting hardware is included."}}, {"@type": "Question", "name": "What voltage range is it rated for?", "acceptedAnswer": {"@type": "Answer", "text": "It's rated for 6V to 36V systems."}}]}