strength drill chuck clamps 513 mm for secure and reliable drill fixation. 90degree vertical positioning enables easy drilling with stable, precise angles. Stable aluminum alloy base with a 10 mm thickness provides solid support during operation. Secure mounting using four screws fixes the unit firmly for steady performance. Convenient handling with 10 cm handles on both sides allows easy operation and hand transitions. Simple and direct use: no need to fix the drill, just dock it and start using. Suitable for drills with a chuck range of 1013 mm. Wide range of applications: suitable for wood, marble, round pipes, and more. Steel/aluminum construction for durability and longevity. Angle 90° for precise and accurate drilling. Practical applications Woodworking: drilling precise holes for shelves, frames, and dowel joints. Stone and tile work: drilling clean pilot holes in marble or ceramic surfaces with a stable 90degree angle. Metal or pipe fabrication: drilling holes in round pipes or tubes for quick assembly.