A two bit holder for Milwaukee drill/drivers that attaches to the belt hook spots. It's uses 6(3 for each bit holder) 5x2mm magnets to hold the bits securely and allows easy removal, and screws or other bits can be attached to the magnets on the front.

The left and right models are from the perspective of the back of the drill/driver. 

I haven't tested it with the bits facing forward, so no promises. but If you want the bits to face forward on the drill/driver use the model meant for the opposite side.

Block support in the path for the attachment screw.