Gravity Falls - Dipper and Mabel's Guide to Mystery and Nonstop Fun

Grappling hook - Wikipedia

Master Cutlery Ninja Grappling Hook\

Some simple practice grappling hooks I made for the kids to try out their Ninja Skills. They had a blast running around trying to get them to hook on stuff. Models here

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Batman Dark Knight Grappling Hook

Make a Mini Grapple Gun!

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Batman The Dark Knight Grappling Hook | 1ct

A home made grappling hook. (Crafts aren't always boring, boys!)