Upgrade your drilling experience with the ZKH 9PCS Concrete Hole Saw Kit – the perfect combination of versatility, durability, and efficiency！ 9 PCS Concrete Hole Saw Kit 5PCS Hole Saws: 30, 40, 65, 80, 100 mm 1PC SDS-Plus Bit Shank 1PC SDS-Max Bit Shank 2PCS Drill Bits SDS Plus & Max shanks The kit includes SDS Plus & Max shanks, ensuring compatibility with a variety of machines, making it a all-in-one choice for professionals, DIY enthusiasts, and maintenance experts. Efficient Drilling The specially tempered 4.1mm thick tool steel body provides excellent wear resistance, with a maximum cutting depth of 54mm. Installation Process of the Hole Saw Set in Four Easy Steps 1. Install the Centering Drill Bit onto the SDS Mandrel Place the centering drill bit onto the appropriate SDS mandrel, ensuring a snug fit. 2. Fix the Centering Drill Bit with Screws Once the centering drill bit is in position on the SDS mandrel, use the provided screws to secure it firmly. Tighten the screws evenly to ensure a secure and balanced attachment. 3. Select the Appropriate Hole Saw to Mount on the Mandrel With the centering drill bit securely in place, it's time to choose the hole saw that suits your drilling needs. Simply align the hole saw with the centering drill bit for a perfect match. 4. Attach the Spindle to Your Power Tool The final step is to attach the assembled mandrel, centering drill bit, and hole saw to your power tool. *Ensure that the spindle of your power tool is compatible with the SDS Plus & Max shanks provided in the kit. Slide the shank into the chuck of your power tool and secure it according to your tool's instructions. Now you're ready to experience efficient and precise drilling with the ZKH Concrete Hole Saw Kit! Wide Applications Drill effortlessly through common wall materials like cement, brick, concrete, adobe, and stone. From construction projects to DIY home improvements, this hole saw kit is a reliable companion.