Description: [Quality Material]:This jewelry making tool is made of quality iron,ensuring its firmness and durability for long term use. [Fine Craftsmanship]:The Swage Block features fine workmanship,enhancing its sturdiness and reliability in jewelry making. [High Hardness]:With great hardness,this Forming Block is practical and designed to last,providing you with a long service life. [Compact Design]:Bracelet Swage Block lightweight and compact design makes it convenient to carry around and store when not in use. [Practical Tool for Jewelry Making]:This iron swage block forming tool is a wonderful addition to your jewelry making process,great for creating rings,bracelets,bangles,etc. Specifications: Material:Iron Size: 20.3cmx3.1cm/7.99inch x 1.22inch; Oval groove:14 17 19 21 22 (mm); Round groove:5 6 8 9 10 11 14 16 17 18 (mm); Semicircular groove:3 4 4.5 5 5.5 7 8 9 10 12 13 15 16 17 19 21 (mm); Triangular groove:3 3 (mm) Note: Please allow slightly errors 1-2cm differences due to manual measurement. Package included: 1 Swage Block