You will need both if you have aftermarket camber arms.
The toe bolts will replace the stock toe bolts for the spring bucket. The new toe bolt will require you to slot the factory hole for more adjustment.
If you have aftermarket camber arms, they are adjustable. You will want to replace the factory bolts with lock out bolts so that the adjustment is only made in the arms. For stock arms, the bolt is used to make camber adjustments. The adjustable bolt is not needed when you have adjustable arms, so you lock it out.