Features: Engineered with a Fast release mechanism and high strength metal construction, this hole cutter arbor enables fast drill bit changes without tools, maximizing efficiency for demanding drilling tasks. Features a rotating roller design for secure locking in and smooth detachment, paired with a telescopic structure that ensures effortless operations during extended drilling. Designed for professional contractors requiring frequent bit swaps and DIYer enthusiasts seeking precise in woodworking or metal fabrication projects. Optimized for construction site needing rapid tool adjustments and home renovation scenarios where compact, durability drilling accessories are critical. Combines durability with lightweight portability, making it indispensable companion for technicians tackling multi location jobsites or tight space installations. Specifications: Component: Metal Size: 191x67x16x8.6mm/7.51x2.63x0.33inch Practicality: Quick materials removal design, greatly improve work efficiency, suitable for drilling operations of various materials such as wood and metal. Package Includes: 1pcs Rotating Roller Lock Drill Adapter 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.