Features:1. The hollowing drum hammer sound detection is retractable and practical. 2. The sound detection hammer is equipped with a textured foam handle for easy and comfortable use.3. The house inspection telescopic rod is easy to carry in its shortened size.4. The decoration inspection test hammer is easy to use.5. The home telescopic inspection hammer can be widely used.Specification:Material: Stainless steelDimensions: about 115cm/45.2inches (unfolded), about 23cm/9.06inches (folded), Pole diameter: about 1.4cm/0.55inchesFeatures: Stainless steel telescopic design reinforced pressure groove, sturdy and durable. The foam handle makes it portable, comfortable and shockproof.Usage: Freely retractable, easy to detect walls. Lightly tap the wall to determine the extent of the hollow wall. Also available for guided tours, blackboard presentations and how-tos.Package list: Hollowing Drum Hammer * 1