... .Easy Operation 2.Various type for choose 3.High quality Air shaft with flangeusage:It is widly used printing,cutting,coating ... sfafts were made of aluminum alloy or steel construction,all air expansion shaft we can according to customer's drawing,welocm ... pneumatic expanding shaft:Φ74,Φ1183,common shaft:fromΦ30-Φ1000. Air Shaft-Key type