Keystone 304 Steel Mnemonic Tablet, Seed Backup, Bitcoin Crypto Cold Storage, Support up to 24 Words, Compatible with All BIP39 Hardware Wallets, Ledger, Trezor, KeepKey, Coldcard (Keystone Tablet)

Mechanical Strength: Made with grade 304 Steel, Keystone Tablet offers the ideal combination of strength, mobility and resistance to corrosion. It is designed to be indestructible with a fireproof threshold of 1399 to 1455°C / 2550 to 2651°F (house fires get up to 649℃ / 1200°F) Exquisite design: Keystone Tablet contains a total of 5 screws on each side and is designed with a keyhole which you can lock it up, combined with its water/corrosion/fire/pressure resistant properties, intense laser engraving process and anti-tampering stickers, you can be sure that whatever happens your recovery seeds will be safe within. Double-sided storage: It can support up to 24-word seed phrase, but you can also use 12 or 18 depending on the length of your recovery phrase/mnemonics/secret words (BIP39 specifies only the first 4 letters are needed to identify each word). Package: Includes tablet, 4 sheets of metal letters (252 letter tiles in total), 2 anti-tampering stickers, spare screws, screwdriver, and quick guide. Keystone Tablet is the ultimate metal solution for storing your recovery phrase of your Bitcoin and other cryptocurrencies.