Single rod: can be used for ring enlargement and reduction, the rod consists of 6 expansion leaves, enlargement size 7-24# (HK SIZE), reduction hole 8 (double-sided)
Double rod: can be used for ring enlargement and reduction, the rod consists of 6 expansion leaves, enlargement size 6-33# (HK SIZE), reduction hole 8 (double-sided)
Broad range: This machine comes up with for ring stretching the smooth-finished reversible base plate with 16 reduction dies for reducing ring size. It is suitable to work on the extensive range of ring/band sizes.