Accuracy: The 60 degree angle center drill is suitable for drilling precise center holes, 60 degree countersunk holes or starting holes, and is suitable for larger drills in metal processing Multiple sizes: Including 7 ordinary center drills, 1.0, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0 to meet different needs High quality: The center drill is made of high quality steel, which is strong and resistant to high temperatures and wear. Widely applicable: With lathes and most electronic drills for drilling hard materials such as steel, iron, aluminum, carbon steel, brass, etc., ranging from 170HB to 200HB Material: Steel Color: Silver Package Contents: 28 x of center drills Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.