Advantages:1. It is easy and converient to use 2.Environment Product Description Damper 3# is suitable for the printer model,as follows: Mimaki JV3, JV4, JV22 . Roland FJ 540/740, SJ 540/740, SP 300/540. Mutoh RJ 900, ValueJet 1204, Falcon II Viper, Viper TX, RJ 8000/8100, Rockhopper II, DraftstationSC 540/545, SJ 645/746EX Damper for JV33