Description:Diamond coated head.High Quality, High hardness, durable, wear-resistant.Can be installed on the electronic grinder, hanging mill and hand electric drill (not included here).Suitable for grinding glass,tiles,marble,jewelry or rock on the edge.Can also use in the chamfering and grooving of various mechanical parts, cleaning pipes, finishing surfaces of machined parts.Diamond grinding head made of high-grade diamond-plated diamond, is processing all kinds of mold, carbide, glass equipment, jade carving and other ideal correction tools.Adding water when use the Diamond grinding head is good, can improve the sharpness and the life of the grinding needle.Features:There are many shapes, such as sphere, cylinder, round head cylinder, needle, flat plate, etc.Come with the PVC box as shown on picture.Largest head size: Approx. 16mm (Close to 5/8")Smallest head size: Approx. 1mm (Close to 1/25")Shank Diameter: 3mm/0.12inch (Please ensure the sand drum fit the rubber mandrel before purchase.)Total Length: 45mm/1.8inchGrit:40Package: Plastic boxPackage Includes:50Pcs Diamond Coated Grinder Head(1 Box)Note:1. Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings.2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.