16 Cutting Blades: This kit includes 6 cutting blades of different sizes, with diameters of 22mm, 25mm, 32mm, 35mm, 44mm, and 50mm, suitable for different scenarios, achieving precise and efficient pipe cutting. 2Adjustable Depth Gauge: Equipped with an adjustable guide as a depth gauge, you can set the guide to maintain the cutting distance of the blade and ensure that the drill bit is straight and cutting at right angle. 3Durable Materials: The connecting rod is made of stainless steel, which is hard, glossy and durable. The cutting blade is made of excellent HHS steel, incisive and sturdy, suitable for cutting PVC pipes and other plastic pipes. 4Simple Operation: The serrated blade can quickly cut, suitable for standard 3/8 inch drill bit, convenient to install and replace, suitable for scenes where pipes need to be cut from the inside. 5Perfect Combination: This kit includes a hex key shaft, 6 pieces serrated cutting blades, a hex wrench, and an adjustable depth gauge to help you cut various types of PVC pipes, making it convenient and practical.