- Comprehensive length options: adjustable 80 mm, 120 mm and 140 mm to efficiently handle drilling tasks with different reach requirements. - Reliable locking system with magnetic support: keeps bits securely in place during use and enhances safety by reducing bit loss. - User-friendly design: innovative separation between outer sleeve and bit shank provides a solid grip while allowing smooth rotation of the screwdriver head for precise positioning. - Effective guide sleeve: self-retracting guide sleeve covers long screws, facilitates precise screwing, minimizes wobble, and protects fingers from injury. - Use case: cabinet or shelving installation where long screws are needed; select 140 mm for extended reach and stable alignment. - Use case: working in tight or overhead spaces; the smooth rotation and finger protection support accurate screw placement with 80–120 mm lengths. - Use case: DIY furniture assembly with mixed screw lengths; quickly switch among 80, 120 and 140 mm to match each step.