Premium Ring Mandrel: Crafted from aluminum, ring measurer and ring sizer has an easy-to-read size chart for both full and half sizes. The 27-piece Ring Sizer Set, made of steel, covers US sizes 0-13 and includes half sizes. Accurate Size Determination: Ring Sizer Set offers excellent value for swiftly determining ring and finger sizes, catering to both professionals and beginners alike. Essential Jewelry Measurement Kit: Tailored for wire working, craft wire, wire wrapping, and wire jewelry, this ring sizer measuring tool kit is a must-have for jewelry enthusiasts. Easy to use and designed for precision. Versatile Rubber Hammer: The soft rubber hammer included in the set features two sides, making it Perfect for flattening or strengthening wires. Its rubber head leaves no traces on your jewelry and ensures damage-free crafting. Heavy-Duty Ring Mandrel with Hammer: The heavy-duty ring mandrel set equipped with a hammer, effortlessly restores roundness to your rings. Perfect for constructing wire wrap rings, ensuring they maintain their shape while being easy to maneuver. Unlock your creativity with this comprehensive jewelry tool set. Material: Aluminum alloy colour: As shown Package Contents: 1 set x ring size measuring tool Only the above package content, other products are not included. Note: Light reflection 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.