7mm version of Mini Bit Driver Enclosure for keychains

This is a 7.1mm bit version of my 4.5mm: http://www.thingiverse.com/thing:2008778

Step 1. Find a 7mm bit that you need to have with you everywhere. Most maker types will have a few sets laying around - if you don't check out your local HW, Electronics, or even dollar store for a set. Budget $1 to $3.

Step 2. Print it with 100% infill - add in your bit and

Step 3. Add to your keychain or EDC multi tool ring.