If you don’t know what is the DOGE SAFETY PACK FOR TUBES, then click here for detailed information.
So if you chose this recommended option, you will get your DOGE 8 Carton :
> 1 extra PSVANE KT88-C
> 1 extra TAD Premium ECC81
> 1 extra TAD Premium ECC83
The shipping cost is free as the weight is very light.