I have a model C001 Band-it brand banding tools. New and unused in original box with instructions.
These generally are used in strapping around cylinders, poles, hose fittings etc.
Here is a YouTube demonstrating a hose clamp using the tool. https://www.youtube.com/watch?v=69JhQDmJALA
Another YouTube video https://www.youtube.com/watch?v=SRib_1aqZs8