DescriptionNylon hard plastic lightweight material, easy to use. Holding the palm's "strike point" in the center between the index finger and middle finger, clenching your fist and it can be used to crack the hard objects, like glass. Simple structure, small size, light weight and easy to carry. On both side surface are polished, the handle ring and the of the ring are all rounded, won't hurt the fingers. In case of an emergency, you can also take it as self-defense tool.Features- Color: Brown - Material: Plastic steel - Size: 9 x 6 x 1.5cm - Nylon hard plastic lightweight material, its strong and durable, but won't hurt the fingers, easy to use. - Simple structure, small size, lightweight and easy to carry. On both side surface are polished, the handle ring and the of the ring are all rounded. - In case of an emergency, you can also take it as self-defense tool. - Holding the palm's "strike point" in the center between the index finger and middle finger, clenching your fist and it can be used to crack the hard objects, like glass.