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. Specification: Item Type: Sound Detection Hammer 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 oz(approx.) Material: Stainless Steel Ball Diameter: Approx. 19mm / 0.7in Package List: 1 x Sound Detection Hammer 1 x Wrist Strap Note: Please note that the color of the handle of this product will be sent randomly, please make sure you don't mind before ordering. Package List 1 x Sound Detection Hammer 1 x Wrist Strap