1.L type tower is made of SS304 tube and usually be 3 way, 4 way. 2.connect joint is made of SS304 and a sealing washer made of PTFE or PVC. 3.Material:brass / body,compensator regulator rocker, nuts; stainless steel / connecting pipe,plunger,compensator,tap spout,springs; ABS / packing of tap spout; plastic handle . 4.The main feature is its compact structure, easy to operate and repair, suitable for a variety of beer and beverages.