Features: The high precisions concentric shafts ensure that your screws are fastened securely without wobbling, providing efficient and precise results. The sleeve's depth is adjustable, accommodating various nut lengths, reducing wobbling, and providing stability during screwing tasks. The built-in magnetizeds magnetic rings prevents screws from falling off, enhancing efficiency and preventing frustration. Precisions plating and deburring treatments result in a smooth, corrosion resistantsurface, making this tool set waterproof and durable. The screwing tool set is a practical gift that enhances the precisions and efficiency of your screwing tasks. It simplifies various DIY and repair projects. Specifications: Material:Carbon Steel Length:Approx.75mm/2.95inch Quantity:2pcs/10pcs Package Includes: 1 Set 3-In-1 Connecting Rod Quick Installation Sleeve 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. Thanks for your understandings.