Comparison : Item # FBK05001, 1/8 Inch (in) Black Iron Tee
Item # FBK05002, 1/4 Inch (in) Black Iron Tee
Item # FBK05003, 3/8 Inch (in) Black Iron Tee
Item # FBK05005, 1/2 Inch (in) Black Iron Tee
Item # FBK05007, 3/4 Inch (in) Black Iron Tee