This ring sizer with mandrel make it easy to reduce and enlarge rings.

A double sided reducing plate with 16 holes for 16 different sizes is included.

O.M.O. – high-quality manufactured in Europe

O.M.O. is a family-owned company established in 1972. Quality and service are constant aims for O.M.O. whose products differ for their precision and the high-quality materials used. O.M.O.’s production range includes anything and everything for jewellers, such as steel drawplates, bezel blocks, ring mandrels, bench blocks, forming blocks, disk cutters, and ringstretchers. All products are manufacture at O.M.O.’s own facilities in Italy. Thanks to constant research into new solutions and a complete understanding of the problems, OMO is always ready to improve their products, so that you can feel safe in the knowledge that you get the absolute best product when buying an O.M.O product.