Sturdy and durable: these smoothing air hammer tools are made of quality steel, sturdy and durable, practical and useful, can be applied for a long time, bringing you much convenience in your daily life Wide range of applications: pneumatic air hammer bits have a wide range of applications, you can use them for repairing your tire and more, which can meet your daily needs and improve your work efficiency Warm note: this pneumatic chisel bit cannot be applied alone, you should pay attention to that this bit is installed on a pneumatic sewing machine and needs to be connected to an air hammer to use Suitable occasion: air hammer tool can be applied for 150/190/250 type air hammer, and the head of hammer is suitable for most hammering operation, such as ball joint and more Practical gift: this smoothing air hammer tool can be a nice choice for you to send your family members, friends, relatives, neighbors and other people who need this product, which will bring much convenience for them