General description The Mophorn Concrete Hole Saw Kit is a comprehensive set designed for precise wall openings in various materials such as brick, concrete, cement, and stone. Utilizing advanced welding technology, this kit ensures durability and reliable performance, making it ideal for both professional and DIY applications. Technical specifications Angle of Pilot Drill Bit: 135° Size of Hole Saws: 30mm (1-2/11"), 40mm (1-3/5"), 65mm (2-9/16"), 80mm (3-5/32"), 100mm (3-15/16") Length of Connecting Rod: 300mm (11-13/16") Material: Carbon Steel Length of Center Drill Bits: 110mm (4-1/3") Compatibility and accessories Compatible with most hammer drills utilizing SDS PLUS and SDS MAX shanks Includes 5 hole saws, 2 connecting rods, and 2 pilot drill bits Compatible with models from Bosch, DeWalt, Hiltex, Makita, and Goplus Installation To install, simply attach the appropriate hole saw to your hammer drill using the SDS PLUS or SDS MAX shank. Ensure the pilot drill bit is securely in