Comparison : Item # 341112-000, 3/16 x 3/16 x 1/4 Inch (in) (TMP) Reducing "Y" Connector
Item # 341112NS, 3/16 x 3/16 x 1/4 Inch (in) (TMP) Reducing "Y" Connector
Item # 341223-000, 1/4 x 1/4 x 3/8 Inch (in) (TMP) Reducing "Y" Connector
Item # 341223NS, 1/4 x 1/4 x 3/8 Inch (in) (TMP) Reducing "Y" Connector
Item # 341232-000, 1/4 x 3/8 x 1/4 Inch (in) (TMP) Reducing "Y" Connector