Note: The color of the product we ship is the color in the first picture, and the specification and quantity are shipped according to the quantity and specification described in the title. If you need to change the color or style, you need to contact us within 12 hours after placing the order. Our product description: Feature: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information 2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.Excellent for making an accurate hole on various bowlder, agates, pearls, jade, etc.4.High quality and long life span.5.Note: Add water for cooling and drill slowly.Product material: Metal, DiamondColor: SilverShank Diameter: 2.3mm or 0.09InchHead Diameter: 0.8mm or 0.03InchSand length: 6-8mmFull length: 41.5-44.5mmWeight: 260gPackage Include:200 x Diamond Coated Hole Saw Drill Bit Note: Because the model and display effect of the monitor may be different, there may be slight differences in color, and the size is manually measured, there may be an error of 1-2cm, please understand.