10Pcs Wet Cutting Diamond Hole Saw Grit Core Drill Bit Set for Tile Glass Stone Ceramic Sommth Cutting Tools

Feature:

• These diamond drill bits made of high-speed steel that is durable and have a long sevice life.
• High quality and good performance that excellent for making clean and accurate hole.
• Coated with high quality diamond, the diamond hole saw creates a high precision, smooth cut with no broken edges.
• No broken edge, no tremor phenomenon, incision resistance is small and the hole speed is very fast, easy chip evacuation and so on.
• Water is required for lubrication when drilling.