This economy solid steel mandrel is for making round shapes such as bezels, jump rings, etc. It has a ground, polished surface that is heat treated. The steel is strong enough to withstand the blows from a hammer.
This oval bezel mandrel tapers from 11 x 12.3mm in diameter down to 4.7 x 5.7mm at the tip.
Overall length of the mandrel is approximately 10-7/8"