Ah were they not removable on the FHAL? my mistake. the FH1AL are removable according to duncan though:
One of the coolest features of the Freehand line of yo-yos has always been the caps: You can collect 'em, customize 'em, and show 'em off to your friends. Caps are cool. So one of the features we just had to include with the Freehand 1 AL was interchangeable caps. Keeping with the reputation that the Freehand has of being a very customizable yo-yo, in addition to interchangeable caps, you can also interchange the bearing from the default full-size bearing to a half-spec, allowing your Freehand to shred both responsive AND unresponsive tricks!