64 Bit Driver Kit's 150mm Flexible Extension is not holding bits
The 150mm Flex Extension in the 64 Bit Driver Kit does not actually have a magnet. The slot uses friction to secure the bit, unlike the iFixit Drive Handle which uses a magnet. If you insert a bit, and then push it in with additional force it will click into place.
If you're not able to get the extension to hold the bit, please Contact Us with your order number.