7 Pcs Concrete Hole Saw Kit 5 Inch, 40 65 80 100 125Mm, With Sds Plus Bit Shank ?VARIETY OF SIZES?7 Pcs Concrete hole saw kit contains 5 different diameters of hole saws: 5 inch hole saw(125mm), 4 inch(100mm), 3.15 inch(80mm), 2.56 inch(65mm), 1.6 inch(40mm); 1pc SDS PLUS Shank 4.33 inch(100mm),1pc center drill bit 4.33 inch(100mm). ?WIDE APPLICATION?Concrete hole saw set easily drills through most common wall materials, perfect used for cement ,mixed brick wall, concrete, stone, drilling walls or install tubing, installation of air-conditioner etc. ?HIGH MATERIAL?Our masonry hole saw kit is made of tungsten steel and carbide, durable and works under rough conditions, super safe and easy to use. Each hole saw is equipped with ventilation holes, free to remove dust generated during the drilling process. ?SDS PLUS?The hammer drill kit is combined with a hole saw designed with SDS plus coring bits, which perfectly matches the round shank four-pit electric impact drill. ?AFTER-SALES-SERVICE?We will be responsible for all our good products, please contact us if you have any problems with our products. We will response within 24 hours.