Features 1. Door lock installation kit, achieving precise engraving and marking 2. Precisions engineering design: Ensure precise chiseling and marking to achieve flawless installation of door locks. 3. Stability effect: It can create clean and perfectly aligned grooves for door lock hardware every time. 4. User friendly: Suitable for both professional installers and DIY enthusiasts, it combines ease of use and reliability. 5. Sturdy construction: Durable and suitable for frequent use in construction sites and workshop environments. 6. Efficient process: Optimize installation steps to reduce errors and rework risks. Specifications Dimensions: Length 79mm/3in, Height 165mm/6.5in Package Include: ; 1* Door lock installation kit