Comparison : Item # 121HSS1/16, St. St. 316 Pipe Plug, Male NPT Thread 1/16”
Item # 121HSS1/8, St. St. 316 Pipe Plug, Male NPT Thread 1/8”
Item # 121HSS1/4, St. St. 316 Pipe Plug, Male NPT Thread 1/4”
Item # 121HSS3/8, St. St. 316 Pipe Plug, Male NPT Thread 3/8”
Item # 121HSS1/2, St. St. 316 Pipe Plug, Male NPT Thread 1/2”