Just picked this up for $8.49
Keychain compatible tool is perfectly sized to be ready when you need it
Surprisingly strong and secure, the tool’s components lock while in use to ensure safety
Overall Length: 3.50"
Closed Length: 2.25"
Width Closed: .75"
https://www.amazon.com/dp/B001UAMCL4
https://www.amazon.com/gp/product/B001UAMCL4