the rod is made of hard steel and spins without wobbeling, but the thread inside is not very neat and looks chipped. it assembles quite loose and tightens only in the last turn. but its acceptable. the safety guard is made also ok but not great.
Have not managed to use as yet as waiting for sanding disks to arrive. Have noticed that the handle bolt is not welded well and is on angle, will probably break off once being used