1/2 inch knurled batch sleeve made from tool steel for durability and long service life, providing high strength for demanding use. Efficient design that works with both electric and manual screwdrivers or wrenches to make thread processing faster and more accurate. Specifications available in multiple sizes to fit thread head of different dimensions, allowing convenient work on and repair of various thread types. Maintenance ready: suitable for maintenance personnel, offering a range of specifications and efficient tools for both home and commercial maintenance tasks. Use scenarios: - In a workshop or repair shop, use the knurled sleeve to process and repair threaded heads of different sizes. - For home maintenance projects, quickly tackle routine thread repairs and small-scale threading tasks. - In commercial or industrial settings, equip maintenance staff with a versatile set of sleeves to handle diverse thread sizes efficiently.