Manufacturer Says:

The Driver Re-Invented, So You Can Re-Invent Your Game.
Your attitude. Your course. Your day. Take command of your game every time you play with I-MIX Technology, only from Callaway Golf. On Tour, golf clubs are dynamic. We bend, tweak and tinker to custom-equip our pros. Now, we bring the power of pro-level customization and personalization to you. I-MIX interchangeable heads and shafts let you reconfigure your driver to meet the unique challenges and conditions of every round. I-MIX Technology will change your mind and your game.

Connect With Your Clubhead
I-MIX Clubheads The Tour-proven FT-iQ and FT-9 are now available with I-MIX Technology. Find your ideal clubhead and start your I-MIX collection. Examine the challenge at hand and equip yourself accordingly. Add loft for more carry. Subtract it for more roll. I-MIX makes it all possible.

I-MIX Shafts Multiply Your Shafts
I-MIX Technology opens the door to an unparalleled array of shaft options. Why settle for just one? There are over 70 shafts offered with I-MIX Technology, the choice is yours.
I-MIX Clubhead

Put Your Game Together
To do a job right, use the right tool. Innovative I-MIX Technology allows you to reconfigure your club in seconds. Step onto the first tee with confidence in hand. Simply pick, click, and you’re ready to play.

Where to get it:
Callaway Golf Unisex FT-5 Driver I-Mix