Function: 1 DIY model polishing strip is a great effect of polishing, can handle the uneven surface of the model well. 2. Double-sided straight sandpaper strips are easy to grip and provide high efficiency. 3 It can be used for detailed grinding, very suitable for sanding 3D printing models. 4 Made of high quality sandpaper, durable and sturdy, total of 4 pieces to suit your needs. 5 Sanding to remove mold defects such as holes and small black dots. Easy to use. Specifications: a> Item Type: Sandpaper Polishing Strips Material: Sandpaper Size: Approx. 178 x 20 x 3.6mm / 7.0 x 0.8 x 0.1 inches Package List: 4 x Mold Polishing Bars