4mm Wing-shank: Ensures precise grip and control during delicate fastening tasks. PH1 Phillips Head: Designed for secure engagement with standard screws, reducing the chance of stripping. 3mm Diameter: Ideal for fine and intricate fastening applications. 20mm Working Length: Enables accuracy in confined or detailed workspaces. 120mm Total Length: Provides extra reach for screws located in deep or difficult-to-access areas.