Features EXCELLENT MATERIALS: Masonry hole saw kit is made of excellent cemented carbide that can help you drill clean holes quickly and last for years even in harsh conditions WIDE RANGE OF APPLICATIONS: Cement hole saws can easily drill through the most common wall materials such as stone, cement, brick, adobe, etc., which is the ideal tool for opening holes when you install air conditioners, water pipes, exhaust pipes, and water heaters WIDE COMPATIBILITY: The hole saw work with any electric hammer drill that accept the tool holder, making your hammer drill more useful than ever before EFFICIENT AND FAST: The concrete hole saw has an incisive alloy head, 135° grinding angle, easy to cut into the wall. Achieve fast drilling and improve work efficiency QUICK CLEANING: The concrete hole saw bit sharpness of three bladed teeth and chip extraction hole design allow you to quickly remove internal and external scratches as you drill, faster and more efficiently 1. EXCELLENT MATERIALS: Masonry hole saw kit is made of excellent cemented carbide that can help you drill clean holes quickly and last for years even in harsh conditions 2. WIDE RANGE OF APPLICATIONS: Cement hole saws can easily drill through the most common wall materials such as stone, cement, brick, adobe, etc., which is the ideal tool for opening holes when you install air conditioners, water pipes, exhaust pipes, and water heaters 3. WIDE COMPATIBILITY: The hole saw work with any electric hammer drill that accept the tool holder, making your hammer drill more useful than ever before 4. EFFICIENT AND FAST: The concrete hole saw has an incisive alloy head, 135° grinding angle, easy to cut into the wall. Achieve fast drilling and improve work efficiency 5. QUICK CLEANING: The concrete hole saw bit sharpness of three bladed teeth and chip extraction hole design allow you to quickly remove internal and external scratches as you drill, faster and more efficiently Specification: Item Type: Concrete Hole Saw Kit Material: Hard alloy Opening Diameter: Approx. 30mm / 1.18in 40mm / 1.57in 65mm / 2.56in 80mm / 3.15in 100mm / 3.94in Opening Depth: Approx. 50mm / 2in Shank Length(without core drill): Approx. 300mm / 11.81in packing list: 5 x Hole Saw Drill 2 x Connecting Rod 2 x Core Drill 2 x Screw 1 x Storage Box(random color) Note: Please allow tiny size error due to manual measurement. Thanks for your understanding. Package List 5 x Hole Saw Drill 2 x Connecting Rod 2 x Core Drill 2 x Screw 1 x Storage Box(random color)