Comparison : Item # FD45-1086-02-02, FD45 Series Industrial Interchange Series B (Brass)
Item # FD45-1086-04-04, FD45 Series Industrial Interchange Series B (Brass)
Item # FD45-1086-06-06, FD45 Series Industrial Interchange Series B (Brass)
Item # FD45-1086-08-10, FD45 Series Industrial Interchange Series B (Brass)
Item # FD45-1086-12-12, FD45 Series Industrial Interchange Series B (Brass)