Features 1、Applicable Scene: these reinforcing steel bartools are suitable for binding steel bars on the construction site. 2、Material: these reinforcing steel bar tie wire twister tools are made of good quality steel and are easy to use, helping to improve your work efficiency. 3、Function: these reinforcing steel bar twisters are designed for pulling and workers can safely and easily hold the bars together. 4、Save time and effort: these reinforcing steel bar tie tools can automatically recoil and reload, saving time and relieving fatigue of your hand; The semi-automatic function lessens repetitive actions and relieves strain on your hands and wrist, good-tools for saving your efforts and improving your work efficiency. 5、Structure: the inside of the hook has a threaded and rebounded structure; After tightening the handle and tightening the end wire, it will automatically bounce back, eliminating the winding process. Specification Model: Black curved hook / Green straight hook (Optional) Material: Carbon steel + non-slip plastic handle Item Length: 260mm / 10.24inch Item Weight: 180g / 6.35oz Package Size: 30 * 3 * 3 cm / 11.81 * 1.18 * 1.18 inch Package Weight: 200g / 7.05oz Package List 1 * Semi-automatic steel bar hook