Welcome to our store! High quality material: made from carbide and yg8 tungsten tips, heat treated and quenched, strong and durable Hole cutting Perfect: Heavy-duty tip combines optimized design for smoother and faster hole cutting without vibration High efficiency: Two large chip opening design on both sides of the wall cutter for smoother removal chips and superior drilling performance Professional core drill bits: cement brick hole saw bits are widely used for concrete cutting, brick engineering, wall drilling, stone, air conditioning installation, etc. Our difference - our goal is to produce the best products that inspire our customers to live more convenient and safer lives. We have a professional product monitoring team who focus on all the details that are important to you. Actual quantity shipped: 2 piece(s) 100% satisfaction - Our customers are our priority. If you find any problems with the products after receiving the goods, such as damage and incorrect quantity, please contact us immediately. We do our best to provide you with satisfactory after-sales service