I'm looking for a specific tool to work on rings called a Expanding Ring Mandrel as seen in the photo attached below and is used for attaching to a mini lathe so the outside of a ring can be worked on. Do you know anyone who makes this or can make this (or a similar design)? Different sizes would be needed to accomodate all rings from US Ring Size 5-16 which is what the steps are used for on the mandrel. Order amount will depend on the price but I'm looking to resell these and would order a minimum total of 100 covering all ring sizes needed. Here's a bit more information from the manufacturer I use to buy from but I'm simply looking for a manufacturer who can offer these to me at a much better price than I'm currently paying. Expanding Ring Mandrel:The expanding ring mandrel is made from a mild steel, standard expanding arbor and machined for ring use. This item for ring mandrel sizes 2-9 and 6-13 has a 1/2 shank and will fit in a 1/2 drill chuck or other lathe chucks which can clamp to 1/2 diameter. For the larger size , 12-15 it will fit in to a 5/8 drill chuck or other lathe chucks. The expanding mandrel comeswith its own hex keyand iscoated with a Black Oxide protective coating. Simply chuck up the ring mandrel, slide on the ring core and tighten the hex key to secure the core from spinning. Use minimum pressure to keep the ring core from rotating on the mandrel. This will also ensure the mandrel does not distort the ring when clamped. The expanding ring mandrel will significantly reduce runout / concentricity issues between the wood band and metal core, which you would encounter when using wood jam chucks or expanding rubber sleeves (sanding sleeves). It can be used for turning, sanding and finishing your ring creations. For those who make all wood rings, this is the perfect addition to your collection of tools. Show More