Bikkuriman Sleeves Collection Sleeves Available in separate listings, from 50 to 500 pieces. If you need more than that, please comment. For 48mm square storage bags, for protecting collection seals. These are hard sleeves, not soft, so they provide even stronger protection against scratches to the cards. I've made various types, but this thickness is the most suitable. If they're made thinner, they feel flimsy, and if they're made thicker, the transparency is compromised, so I settled on this. Regarding refills, I've received many questions, so I'll explain. For refills, search for "YSV-BDH81 pocket refill" on R. I use them too. There are two types: 20-pocket and 12-pocket. The 20-pocket is for 42mm squares, and the 12-pocket is for 52mm squares. (For single sleeves) The 20-pocket can hold 240 cards, and the 12-pocket can hold 144 cards. I use 12-pocket for old Bikkuriman cards with double sleeves and Bikkuriman 2000 with single sleeves to standardize the refill size. I think the 12-pocket is suitable for old Bikkuriman cards because the arrangement looks good. There are various types of refills, some where the cards fall out easily when turned upside down, and some that are thin and flimsy, but the YSV-BDH81 refill is definitely a good choice. If you want even stronger protection, I am selling 52mm square sleeves in a separate listing. You can also put the 52mm square sleeves over the 48mm square sleeves. How about perfect protection with double sleeves? Made in Japan, but due to the specifications of the machine, there may be some dimensional errors, so please understand. Shipping Mercari shipping, simple packaging. Target products Old Bikkuriman Kimetsu no Yaiba Man Bikkuriman One Piece Man Mobile Suit Gundam Man Bokura no Bikkuriman Gumla Twist Dokidoki Gakuen Harima Oh no Densetsu Time Slip Battle AKBkkuriman Tenshi Darake no Bikkuriman Akuma Darake no Bikkuriman Dragon Ball Man Pokemon Wafer Sumie Bikkuriman Jujutsu Kaisen Man 48mm square seals Thank you very much m(__)m