This large expanding ring mandrel for lathes fits ring sizes 7 to 14. The set also includes an Hex wrench for expanding and contracting the mandrel. HIGH QUALITY STEEL: Our ring expansion mandrels are made of carbon structural steel, which is stronger and less prone to deformation. EASY TO USE: This expanding mandrel can be easily used on lathes. Each ring size has extra space to accommodate the tape so the inside of the ring 't get scratched. For proper functionality, apply one or two coats of tape over the steps you be using. This helps protect the inside of your ring. Features: Rotating the ring on a lathe make making the ring 10 times easier than using a rotary tool or other methods. You can easily swap out any size and get a snug fit in seconds. Precision: Expanding mandrels provide a high level of precision when making rings. Designed for use on lathes. Also suitable for drill chucks. Colour: Material:Stainless steel Size: Tool 1:90x32x6.5mm, 1 piece Tool 2:89x12.5mm, needle:8mm, 1 piece Tool 3:96x24mm, inner diameter:12mm, 1 piece Package Contents: 1set * ring stretcher 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!