L size, A7 6-hole Hologram Refill, 20 sheets Approximately 129mm x approximately 91mm Thickness: 0.1mm Holes are punched one by one in Seria's hologram sleeves (crush pattern) L size using a 6-hole punch (3.5mm diameter). If you wish, the hole diameter can be changed to a larger size, so please contact me before purchasing. Please understand that there may be some misalignment due to manual work, and only purchase if you are okay with this. When using it as a sticker backing sheet, please be aware that thin paper stickers may not come off. Since it's a sleeve, you can also put things inside. (L size photos will not fit because of the holes)