Feature: This blade will perform well on any hardness rock Achieving satisfactory cutting results and reducing unnecessary material consumption. Exclusively designed for processing materials for softer high value rocks like turquoise, opals and some other diamonds. More diamonds in the notched rim and a stiffer core make this blade cut faster and provide a long use-life. This thin diamond lapidary saw blade offers a very good cost effective option for those that want either very thin kerfs or plan on short term use. Specification:Material: MetalWight: 92gOutside Diameter: 100mm/3.94inArbor hole: 16mm/0.63inThickness: 0.3mm/0.01inPackage Includes:5 x BladeNotice:1. Please allow slight error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.