Coldbit Steel is a durable solution for your Bitcoin seed backup.
Made of 4mm thick stainless steel seed plate and a 2mm stainless steel cover and 2 nickel binding posts..
It's designed to withstand a house fire, flood, electrical and magnetic shocks, extreme temperatures (up to 1200 C) and humidity (corrosion resistance).
Compatible with any 24, 20 or 12 word seeds (BIP-39, SLIP-39 standards) and all wallets that use seed words backup (eg. Trezor, Ledger, ColdCard, Phoenix etc.)
Features:
stores up to 24 seed words on a single plate (each word up to 8 letters)
extra line at the bottom that can be used to stamp the wallet name/ID or a fingerprint or be used as a 25th word
2 stainless steel (AISI 304) heat and corrosion resistant plates. 4mm thick seed plate and 2mm cover
secured with 2 nickel binding posts with a countersink hole on the back - the plate lays flat on a table
comes with another testing plate to practice stamping by default
