1.material: stainless steel 304 2.finish: mirror polish 3.size: 25meter( length)*30mm(open width)*0.5mm(thickness) 4.packing: packing in roll,one roll/knit bag,special packing is accepted. 5.factory direct offer with good quality and competitive price. 6.professional piano hinge manufacturer in China near ten years. 7.automated machine produce line.can delivery quickly. 25meter*30*0.5mm,weight: 4.44kg/pcs.