ITEM NAME:Metal Hand Twist Drill With 10 HHS Drill Bits Drilling Tool Watch Repair TooA3C Features: Description: Drill On: PCB, jewelry, watches, etc Package Includes: 1 x Hand Drill 10 x Drill Bits 2 Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!.The chuck of hand drill has a wide grasp range from 0.3mm to 3.6mm which can fit for many sizes of drill bits. Material: Copper alloy(drill), high speed steel(bits). Drill Bits: 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.2mm, 1.5mm, 1.8mm, 2mm.