General description This VEVOR Concrete Hole Saw Kit includes a comprehensive set of tools designed for drilling through various wall materials such as brick, concrete, cement, and stone. The kit features hole saws ranging from 1-2/11" to 3-15/16" (30 mm to 100 mm) and is equipped with SDS Plus and SDS MAX shanks, making it compatible with most hammer drills. The sharp 135° pilot drill bit ensures precise drilling, while the premium carbon steel construction guarantees durability and efficiency. Technical specifications Material: Carbon Steel Size of Hole Saws: 1-2/11" (30 mm), 1-3/5" (40 mm), 2-9/16" (65 mm), 3-5/32" (80 mm), 3-15/16" (100 mm) Length of Connecting Rod: 11-13/16" (300 mm) Length of Center Drill Bits: 4-1/3" (110 mm) Angle of Pilot Drill Bit: 135° Package Content 5 x Hole Saws 2 x Center Drill Bits 1 x SDS MAX Connecting Rod 1 x SDS PLUS Connecting Rod 2 x Screws 1 x Aluminum Plastic Box Usage Ideal for drilling holes for air conditioning, water pipes, exhaust hoses,