Excellent quality cutting attachment until three of the four teeth sheared off and the bit broke in half after about ten minutes of use. I would buy the racquet again, I hope it was just a defect in the racquet.
Pros
Aluminum Titanium Nitride (AlTiN) coating lubricates the end mill, provides high temperature stability and abrasion resistance at high cutting speeds, and offers better heat resistance than TiN, TiAlN and TiCN coatings