If you don't have one of these I can picture your LEGO collection. Teeth marks, scratches, broken parts, etc. If you buy one of these, building (and destoying) anything will be a breeze.
Pro's
Pulls apart all those pesky little pieces
Saves you from the dentist bill for fixing your broken teeth, caused by trying to bite the pieces apart.
Con's
None
If you buy two of these just put them on the top and bottom of the two stubborn pieces, squeeze, and you can seperate every tough piece.
Overall, I gave this product full marks, because the usefullness is definitely worth $1.69, and it will remove pieces faster allowing you to build faster. Seriously, you should buy these, you will love them as soon as you use them.
Leg godt! (Play well!)