Features Sponge handle makes it portable, comfortable and shockproof. Free expansion control, stainless steel body, shockproof, non-slip, durable. Home inspection-hammer, which is used to test whether wall, tiles, ceilings and other structures are empty. Each part is tightly connected and stable without shaking. Freely retractable, easy to carry and use, saves space. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Handle Material: Sponge Body Material: Stainless Steel Retractable Length: Approx. 23cm / 9.1in Expansion Length: Approx. 115cm / 45.3in Net Weight: 96.6 g / 3.4 ozapprox. Material: Stainless Steel Ball Diameter: Approx. 19mm / 0.7in Package List: 1x 115CM Telescopic Hollowing Drums Detection-Hammer