【 DURABLE AND INDESTRUCTIBLE 】: Made with grade 304 Steel, the Keystone Tablet Punch is the long term solution to helping you safely store and backup your wallet’s seed phrase due to its resistance to corrosion. It is also designed to have a fireproof threshold of 1399 to 1455°C / 2550 to 2651°F (House fires go up to 649℃ / 1200°F). 【 SLEEK AND EFFICIENT DESIGN 】: Slightly bigger than a credit card, the Keystone Tablet Punch is very portable. It comes with 3 separate metal plates and has 3 different sizes of keyholes that allows you to use a physical lock to secure your mnemonics. 【 SEED PHRASE STORAGE 】: Supports 12, 18 or 24 word seed phrases (Only first 4 letters of each word needed).Suitable for all types of cryptocurrencies (Bitcoin, Ethereum, Ripple, Litecoin, Dogecoin, Cardano, Binance Coin, Shiba Inu, Avalanche, Solana, Terra, Polygon, USDC, USDT etc.) 【 HUGE RANGE OF COMPATIBILITY 】: Compatible with all BIP39 hardware and software wallets (Ledger Nano X, Trezor, Bitbox, KeepKey, Coldcard, MetaMask, Coinbase Wallet, Electrum, Mycelium, Exodus, Wasabi Wallet, Opolo, Cobo, ZenGo, CoinSmart etc.). 【 WHAT YOU GET 】: 3 Keystone Tablet Punch plates. A front cover plate (one-sided, words 1-6); a middle cover plate (two-sided, words 7-18); a back cover plate (one-sided, words 19-24); and a center punch tool. 【 CAUTION 】: When you are using the punch, please do not use too much force, it may cause the punch spring to be over-pressed and unable to continue to work.