Semi-automatic eyelet machine/eyelet machine The diameter of the die holder is 9.5mm,suited for all kinds of buttons,snaps etc. Semi-automatic eyelet machine/eyelet machineThe diameter of the die holder is 9.5mm,suited for all kinds of buttons,snapsWorking air pressure:0-0.7MpaButton-attaching pressure:0-650kgsFrequency:28/minVolume:1350*550*710mm Semi automatic eyelet machine