1 Stainless steel telescopic design with reinforced pressure groove make it a firm and durable product 2 Sponge handle makes it portable, comfortable and shockproof 3 Easy to use, gently tap the wall to determine the scope of the cavity wall 4 It can be also used for tour guides, blackboard presentations and operational instructions 5 It can be freely telescopic to easily detect the wall

What's in the box
1 x Detection Hammer