Bi-pins come in many flavors but look very similar.

• 12 volt G4 (pin spread 1/8 inch)
• 12 volt G6.35  (pin spread 7/32 inch or so)
• 120 volt G6.35 (pin spread 7/32 inch or so)
• 120 volt G8 (pin spread 1/4 inch)
• 120 volt G9