Features: brand new and high quality ● Structural grade: The hole opener is made of iron metal material, which has higher hardness, higher toughness and for stronger resistance. ● Special structure: The hole-opening saw blade adopts an unconstrained cleaning edge design, which can clean the hole smoothly. The duplex smooth positive rake with variable pitch ensures fast and clean cuts in all thicknesses. ● High precision: upgraded design with ultra-sharp serrations, cutting faster and cleaner, very suitable for cork, plastic board, electroplated board and thin PVC board ● High-quality material: iron, heat-treated. High strength and hardness, designed to improve durability and excellent cutting performance. Our hole saws have reinforced shoulders to increase strength and service life ● Portable storage box: The hole saw kit comes with a sturdy box for easy and orderly storage. Easy to carry. Improve work efficiency. Specifications: Material:Iron Color :Red Size: Approx.15x3.4cm/5.9x1.3inch Package Includes: 1PCxHole Saw Drilling Tool note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.