Green Color: 107*1.2*16mm Black Color: 105*1.2*16mm ? Outer diameter: about 107mm/4.21in,Inner diameter: about 16mm/0.63in,Thickness: about 1.2mm/0.05in ? Ideal for stainless steel and other metal cutting ? The product is made of resin, so it is safe and environmentally friendly. ? Cutting can be done quickly and accurately,The product is suitable for most devices. ? Features: High quality materials, not easy tobreak. Double mesh reinforcement, durable design, ultra-thin structure, sharp and incredible Notice:Sometimes the color of the goods will be changed, but it will not affect the effect of it. So please don't mind with it.