... 6 kg Usually , we use grommet machine for flex banner , the grommet is 2 parts/set, positive ring and ... ring, and negative ring, then put the flex banner in machine, press handle to finish it. It ... is too slow, and when put flex banner in machine, easy to move the negative ring out ... around 1000pcs/hour; light weight, rivalrous price. Promotion! single ring steel manual eyelet hole punching machine