1.Y type SS304 tower usually be 6 way, 8 way.
2.Old style of vase coulmn with a base on bottom,new style with no base on bottom and it's more elegant.
3.L type tower is made of SS304 tube and connected with SS304 flanges.
4.Cobra culomn is assembled on your beer table with a brass thread tube,and thread size is G1/2" or G1 1/2".