This 9 x 132 mm (older versions were 8 mm) version will not fit models manufactured prior to 1973. Not sure of your units antiquity? Check out a very comprehensive listing here.
Attention CA Residents: Prop 65 Warning
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.