Opaque red rollover/through lane guide.
Mounting holes are 1-1/2″ on center.
If you need just a one sided piece, I always just trim one side off with a dremel.
Can be used in place of the “bally” logo guide.
This is a very common size/shape lane guide, found on many EM & SS Williams, Bally, Gottlieb, Data East, Stern, and others.