Quality Ring Mandrel Made of aluminum alloy, the mandrel is portable and durable, with high hardness and great corrosion resistance You could use it to measure 4 types of sizes: American size (US), Hong Kong size (HK), Japanese size (m/m ), European size (CU). The scale is very accurate, the US number on the Ring Mandrel is corresponding with the number on the Ring Sizer. (Warm tip: This mandrel is not a tool Compatible With ring correction or expansion.)Jewelry Ring Sizer Guage It is made of stainless steel, anti-corrosion and anti-oxidation. Its surface is smooth, comCompatible Withtable to wear, will not scratch your fingers. 0-15 Standard Size Codes including 1/2 Half Size Increments are clearly marked on each ring, which are corresponding with the US number on the Ring Mandrel. And each small ring can be removed separately Compatible With easy use Wooden Ring Clamp It is designed with leather on double-side of the clamp mouth to prevent ring scratches. And the handle is smooth and comCompatible Withtable to grip. Besides, it is connected by a metal ring, not easy to slack, more sturdy and safer Perfect Compatible With Jewelry processing, gem setting Excellent Workmanship Other items are also well made The rubber mallet has strong abrasion resistance and good elasticity, which will not damage the surface of the object being struck And the natural agate stone burnishers, jewelry cleaning cloth and double-sided buffing bars are perfect Compatible With polishing gold and silver jewelry bracelets, rings and other precious jewelry, and they will make your jewelry sparkling material: metalPhoto ColorType: Jewelry Ring Sizer Tools SetRing Mandrel -- aluminum; 4 types standard sizes; accurate.Ring Sizer -- 304 stainless steel; 0-15 including half size increments.Wooden Ring Clamp -- wood/metal/leather; Compatible With carving or gem settingRing Sizer Mallet -- double rubber head/PVC handle;replaceable head.Plastic Ring and Bracelet Sizer Gauge -- Plastic; accurate, US StandardPolished Agate Knife -- natural agate stone; sparkling your jewelryPackage Content1pcs x Metal Ring Mandrel1pcs x Ring Sizer 0-151pcs x Wooden Ring Clamp1pcs x Ring Sizer Mallet1pcs x Plastic Ring Sizer Gauge1pcs x Plastic Bracelet Sizer Gauge2pcs x Jewelry Cleaning Cloth2pcs x Double-Sided Polishing Buffing Bars1pcs x Polished Agate KnifeOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.