Lane guide - 2-3/4 inch EM round edge green
Ships from US and is sold by Marco Specialties$2.95
Early EM (electromechanical 1950's through 1960's) pinball playfield 2-3/4 inch long opaque green plastic double sided rollover or lane guide with rounded edges.
Mounting hole centers are 2-1/8 inch apart on-center.
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