Air shaft put out the 3 inch air shaft, when work, the shaft can use as 6inch performance.

                                                     Air Shaft

A. Air cover has key type and drum type, drum type air cover also called air drum.

B. Usage: set outside the 3 inches air shaft, can achieve the six inches efficient

C. Inner bore Ø 76mm, outside diameter is 150mm, the length is according to the customers request

D. Adopt the high quality aluminum alloy hard oxidize, the surface color is tawny,use convenient

E. After gassing is equal to 6 inches air shaft, outside diameter can reach 155-158mm

F. The surface of key bar length is 100mm, width is 8mm

G. The outside of air drum surface, which part bulge ia made by rubber, having been produced with the design being finalized, we have stock.Total length id 190mm.