This is the same momentary-on starter button used in Allstar Performance switch panels, and is a good alternative to a key-style starter switch. The button mounts in a 5/8" hole and has #8 terminal mounting screws. A rubber boot threads on after installation to help seal out the elements.Spec Sheet: Allstar Spec SheetCompatibility:Universal fit. Not vehicle-specific — mounts to the switch panel, dash, chassis, or engine per the application described above.FAQWhat mounting hole size does this button need?This button needs a 5/8" mounting hole.Is this the same button used in Allstar switch panels?Yes, it is the same momentary-on starter button used across Allstar switch panels.{"@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [{"@type": "Question", "name": "What mounting hole size does this button need?", "acceptedAnswer": {"@type": "Answer", "text": "This button needs a 5/8\" mounting hole."}}, {"@type": "Question", "name": "Is this the same button used in Allstar switch panels?", "acceptedAnswer": {"@type": "Answer", "text": "Yes, it is the same momentary-on starter button used across Allstar switch panels."}}]}