Size:about 9 *4.5cm/3.54*1.77in.Material:plastic+magnetic.The color of the item displayed on the monitor may be slightly different on your computer monitor for the monitor is not calibrated.The product is magnetic which can only be used on the refrigerator,microwave ovens and other iron products.No need of punch or adhesive.Uses in tiles,cement walls,wooden materials,non-magnetic stainless steel material are not allowed.Packing List:1*reel holder .