Description:The twist drill has sharp edges and corners, high drilling efficiency and very high reliability.It adopts exquisite workmanship, which makes it has smooth surface, clean drilling, high hardness, and very strong and durable.Made of high-quality high speed steel and emery, the twist drill is high-strength.There are eight specifications for you to choose from: 0.8mm, 1.0mm, 1.2mm, 1.5mm, 1.8mm, 2.0mm, 2.5mm, 3.0mm.It is suitable for jade, metal, agate, emeralds, gems, pearls, pendants, pebbles.Item Name: Emery Twist DrillMaterial: High Speed Steel,EmeryApplication: Drilling ToolSpecification: 0.8mm, 1.0mm, 1.2mm, 1.5mm, 1.8mm, 2.0mm, 2.5mm, 3.0mmQuantity: 10PcsSize Details: Size:0.8mm: 0.08cm x 3cm/0" x 1.2" (Approx.)1.0mm: 0.1cm x 3cm/0" x 1.2" (Approx.)1.2mm: 0.12cm x 3cm/0" x 1.2" (Approx.)1.5mm: 0.15cm x 4cm/0.1" x 1.6" (Approx.)1.8mm: 0.18cm x 4cm/0.1" x 1.6" (Approx.)2.0mm: 0.2cm x 5cm/0.1" x 2" (Approx.)2.5mm: 0.25cm x 5.5cm/0.1" x 2.2" (Approx.)3.0mm: 0.3cm x 6cm/0.1" x 2.4" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:10 x Emery Twist Drill