Usage: Put the coin in the middle of the hole, fix the nails with flat corners in the bound paper clip, or stick the four corners with double-sided tape. A set of 50 , 2 grids each, with a diameter of 40mm. Suitable for coins with larger diameters. The white card paper money and paper clips, the film material inside is OPP, has no side effects on coins, highly transparent attached film, excellent workmanship, is your best for collection. This product uses pure wood pulp paper, good hardness, smooth coating, high transparency, high ring alignment rate, neatly trimmed edges, no jagged edges. Please choose the appropriate model when you are a collector. Colour:White Material:Paper+OPP Size:100x50x0.58mm Package Contents: 50 * Coin paper clip Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.