steel manual eyelet hole punching machine 1. Press by hand 2. Easy to operate 3.single grommet , save cost and manpower single ring effective eyelet hole punching machineDimension: 150*150*100 ... ring, no need negative ring, save cost; operation is easier, work faster, can make around 1000pcs/hour; light weight, rivalrous price. 2012 New steel single ring effective eyelet hole punching machine