Hazet's workshop-grade internal hex screwdriver delivers precise, dependable performance for 4 mm hex fasteners. Designed for professionals and serious DIYers, it offers reliable reach and control with a 150 mm blade for tackling tasks in tight spaces. Key Features & Design * Size (Key width): 4 mm (metric) * Blade length: 150 mm * Type: Innen-Sechskantschraubendreher (internal hex screwdriver) * Brand: Hazet * Model: 828-4 Performance / Benefits Equipped with a precise 4 mm internal hex tip and a long 150 mm blade, this tool provides stable control while reaching into confined areas. It supports a wide range of workshop tasks—from assembly to maintenance—helping you tighten and loosen hex fasteners with confidence and consistency. Built for durability and reliability, it’s a trusted addition to any professional or home workshop.