These are size 32, triangle blade felting needles. The 32 gauge is for needling hair onto vinyl dolls and for needling coarse fiber such as Karakul. We call this the Coarse Needle. This is a pack of 50 needles, each needle in a protective plastic sheath.
This needle is a little unusual because it has all of its notches along one of the three sharp edges. The two plain edges help to pass the needle through the fiber while the notched edge pushes the fiber down so it can tangle.
For help in selecting the needle size for your wool, check out these web pages: http://members.peak.org/~spark/FineFiberNeedles.html http://members.peak.org/~spark/Wool-FeltingNeedleChart.html