Professional wide expanding ring mandrel, full stainless steel construction.
Steps are 0.250 or 1/4 inch wide per step
All Expanding ring mandrels are supplied with a key, extras available
Five sizes included with an aluminum stand
full size from 4 to 9
full size from 9 to 14
half size from 4.5 to 8.5
half size from 9.5 to 13.5
extra large 13-17