If you want to have both Metric & Imperial Hex bits, please add $6 per additional Hex Bits Set (4 Hex bits included) upon your pledge.
For multi-reward backers, we can help mix your combination of getting both metric & imperial hex sets. Ex - if you pledge two pen reward ($80), you can have one with metric and one with imperial. We'll confirm again all optional items including your color & bits choice.
Don't see the answer to your question? Ask the project creator directly.