- Robust construction: Made from reinforced ABS plastic, this door lock installation set is built for durable use and suitable for both professionals and DIY enthusiasts. - Easy installation: The adjustable plastic housing simplifies the installation process, reduces user fatigue, and features snap-fit arms for precise width selection during drilling. - Wide compatibility: Fits a range of wooden doors with thickness from 3.5 cm to 4.5 cm; compatible with spindle diameters of 0.95 cm and 1.9 cm for different applications. - Reliable performance: Designed to ensure accurate alignment and secure mounting, delivering consistent operation across various door types. - Practical applications: Ideal for installing new door locks on interior wooden doors; suitable for retrofitting existing doors in renovation projects; adaptable to different thicknesses and spindle configurations.