Review on Lightweight Multi-Tool Organizer Keychain - Compact and Efficient by Jacob Guerrero

Shiny steel holder, but the black one looks like aluminium. There are four additional "short bolts" if you don't need 10 or 12 keys. Using plastic spacers I was able to fit a round lock key and a standard key on one side and six standard keys on the other side. The screws hold well with Loctite, but are long enough to hold the holder together long after they've loosened.