Features 1、Electroplating Treatment: After the electroplating process, the gold steel grit is firmly embedded in the cutting part of the cutting edge, with high life and durability. 2、Quick Chip Removal: The chip evacuation port can ensure a incisive edge, which is convenient for chip evacuation and makes it more efficient. 3、Universal: Universal shank drill is more convenient, compatible with a variety of hand drills, rechargeable drills, and has better applicability. 4、Emery: Made of high toughness diamond grit, it is easy to cut and can save time and effort to help you complete the drilling work. 5、Various Specifications: There are a total of 15PCS drill bits of different specifications in the kit, you can choose to use according to the diameter of the hole you need. Specification Item Type: Diamond Hole Saw Material: Metal alloy Package List 1 x Diamond Drill Bit Set (15Pcs)