Made out of quality tool steel, this set is supplied in a plastic suitcase as advertised, and comes with 7 different tips- 5 x live centers, 1 x female center, 1 x pipe center tip with an ejecting key * Supplied in 3MT hard and precisely ground shank * Wide application on small lathes for hobbyists, metal and model makers * Hardened & precisely ground body & shanks. Fitted with 3 bearings (2 x needle & 1 x thrust) * Accuracy within 10 micron run out, one of the finest quality available on amazon