Features: The hexagonal shank fast release arbor hole saw delivers rapid tool changes and multi materials compatibility, engineered for efficient drilling through wood, plasterboard, and plastic with its carbon steel construction. Featuring carbon steel body and universally 1/4" hexagonal shank design, this arbor seamlessly adapts to both bimetal hole saw (38mm+) and all size pipe cutter without secondary tools. Ideal for professional carpenters, construction workers, and DIYer enthusiasts requiring precise drilling solution for cabinetry installation, or PVC piping projects. Perfect for workshop environments or jobs site where quick transitioning between drilling wood cores, creating plumbing access points, and processing composite materials boosts productivity. Its patented fast release mechanism enables single handed bit replacement, while the anti slip grip ensures secure handling during continuous operations on vertical surfaces and overhead applications. Specifications: Product name: Multifunctional quick cores opening rod Component: 40# carbon steel main body + high-speed steel center drill Length:Approx.195mm/7.68inch Package Includes: 1pcs Rapid Change Hole Cutter Arbor note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.