CALIFORNIA WARNING: This product can expose you to chemicals, including lead and DEHP, which are known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, go to https://www.p65warnings.ca.gov.
Early electromechanical (1950's through 1960's) 2-1/8 inch long transparent blue plastic double sided rollover or lane guide with rounded edges.
Mounting hole centers are 1-1/2" apart on-centers.
Reference:
4876