Comparison : Item # 2222-2S, 2222 External Pipe/Plug Countersunk Hex
Item # 2222-4S, 2222 External Pipe/Plug Countersunk Hex
Item # 2222-6S, 2222 External Pipe/Plug Countersunk Hex
Item # 2222-8S, 2222 External Pipe/Plug Countersunk Hex