Features: This triangle hole on the extension rod ensures secure locking with hexagonal shank, while double screw fixation on the adapter prevents slippage during drilling operational. Crafted from steel, this drill adapter extension set deliver wear resistance and durability for prolonged use in demanding workshop environments. Ideal for professional contractor, woodworking enthusiasts, and requiring power tool accessories for drilling task. Perfect for installing cabinets, creating ventilation holes in thin metal sheets, or crafting decorative patterns in plastic panels during home renovation projects. Suitable for both cordless drill and standard electric drills, this adapter set simplifies specific drilling without tool change. Specifications: Component:Metal Size:150mm/300mm Package Includes: 2Pcs Extension Rod note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.