This 2 Piece Kit Includes Rathburn Ring Stretcher Sizer & Ring Mandrel Wood Tapered Jewelry Making Tools Ring Stretcher Size Enlarger Jewelry Sizing Tool Rathburn Wedding Bands Sizer Rathburn Ring Stretcher For Resizing Rings. This is a new Rathburn ring stretcher. It can quickly enlarge plain bands. Simply tapping the end spreads the outer mandrel and stretches the ring. This is used for wedding bands size 8 to 15. 6" Ring Mandrel For Jewelry Repair This is a new wood ring mandrel Can be used for shaping and removing dents from rings An essential tool for the jeweler, goldsmith, silversmith and metal worker It measures approximately 6" long