Description: 【Function】: Effortlessly locates screws in stud behind drywall using a powerful design, making it ideal for all standard drywall structures 【Quality Material】: Stud Finder is crafted from quality PP material to ensure long time performance and reliability during repeated use 【Versatile Use】: Specially designed for drywall and wooden walls; not suitable for lath or plaster walls, ensuring accurate results where you need them most 【Easy to Use】: The Nail Locate conveniently adheres to the wall surface, clearly indicating the exact position of hidden stud for easy marking and drilling 【Compact Size】: Compact size 13.9 cmx2.5 cm/5.47 inchx0.98 inch, makes it easy to carry and store; includes 1 stud detector tool per package Specification: Material: PP Size Chart: 13.9 cmx2.5 cm/5.47 inchx0.98 inch Package Includes: 1 Stud Finder Tool  Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.