Comparison : Item # SS-4-SAE-1-4, Adapter (Male SAE/MS Thread to Male NPT)
Item # SS-6-SAE-1-6, Adapter (Male SAE/MS Thread to Male NPT)
Item # SS-8-SAE-1-8, Adapter (Male SAE/MS Thread to Male NPT)
Item # SS-12-SAE-1-12, Adapter (Male SAE/MS Thread to Male NPT)
Item # SS-16-SAE-1-16, Adapter (Male SAE/MS Thread to Male NPT)