Replacement strap cutter for JD13/16 type strapping tools. These tools are sold under all sorts of different name and models on ebay and amazon. Hightop, Konefeji, Baoshishan, Captok, Flyrivergo, and Soko are some of the more common names they are sold under. There are plenty of others as well.
If you have any questions if the tension wheel will fit your model or not please message me with a picture of the tool you have. The main thing to look for is the welding and tension adjustment knobs will be located above where the strap is inserted into the tool.