They have a ribbed rubber flange that measures about 1-5/8" across the opening

Comes wired up complete with a 12 Volt 60/55 Watt H4 halogen bulb

Smaller 17" length fits in more locations

as your rotor & stator produce the power for your lighting system

Folding handle for easy storage

Petcock Bung 22mm Long Frisco Chopper Style - Steel - Weld-In for Harley-Davidson Fuel Valves / Petcocks Tire Size_16" They have a ribbed rubberThis weld on, mild steel, extra long Frisco Style steel petcock bung allows you to set a gas tank up Frisco style. Frisco mounted gas tanks have a shallow tunnel and sit up high on the backbone. This bug lets you put your petcock fuel tap at the far rear of the tank for the maximum amount of miles out of that skinny chopper tank. If your fuel valve is midway up the gas tank you can never get all the gasoline to your carburetor! This petcock bung is