【High-Quality Construction】: The Portable Automatic Rebar Tying Machine is crafted from premium steel and plastic materials, ensuring longevity and efficiency. This electric tying tool operates at 1000 RPM, significantly enhancing your productivity on the job site 【Powerful Large Capacity Battery】: Equipped with two rechargeable batteries, this rebar strapping machine features a robust 6000mAh battery that charges fully in just 1.5 hours. With a voltage of 12.8V, it offers an impressive working time of 4-5 hours, making it ideal for extended use 【Versatile Hook Heads】: The included retractable hook heads are made of high-strength steel, providing durability and reliability. Each package contains one short and one long hook, allowing you to easily switch between them according to your construction environment's requirements 【Rotate and Retract Freely】: When the steel hook is pulled out, the steel wire will tighten with the rotation; when the hook is retracted, it can automatically spring back without rotating, so it is very flexible to use. The closed length is 22cm/8.6inch, and the straightened length is 26.2cm/10.3inch 【Wide Application】: Rebar tie guns can be widely used in construction sites, large bridges, highways, railways, tunnels, mine construction, farms, garden fences, ground pipes, floor heating networks, etc