Ninja Window Breaker Hammer Finger Ring

Specifications: Height (from the arc of the fist to the bottom): 72mm Width (fist): 138mm Thickness (thickness of the fist): 7mm Finger hole diameter 27mm
Weight: about 147 grams
Material: zinc alloy
Surface technology: black surface spraying, gold and silver are electroplating
Note: The surface treatment process of the ring is divided into electroplating and spraying. Because of the characteristics of the process, it needs to be hung up for processing, and there is inevitably an electric contact point and a spray hanging point. This product is generally electrocuted on the inner edge of the finger hole, which has less impact on the overall product; the electroplated surface and paint surface of metal products will inevitably have fine sand spots or scratches, please be aware! If you mind, please think twice before placing an order with perfectionists;
Function: Suitable for martial arts fighting defense and life-saving, outdoor car equipment self-defense; travel or home standby defense emergency survival, it has simple functions and almost no special practice is required to master it. It is a very practical product.
The product is cast in one piece of zinc alloy, and the die-cast zinc alloy has good mechanical properties at room temperature. However, the tensile strength at high temperature and the impact performance at low temperature are significantly reduced, so it is not suitable to be used in high temperature and low temperature (below 0??) working environment. Note: Please pay attention to the maintenance of metal products. It is easy to cause rust in high salt, high alkali and high acidity environments. For long-term storage, please wipe off the sweat on the surface. If necessary, you can apply a layer of motor oil on the surface to form an oil film to isolate air oxidation.