Just in time for the premiere of X-Men: Days of Future Past, high-energy U.K. garage inventor Colin Furze has created fully retractable metal claws that will undoubtedly make him the envy of every Wolverine fan, and the prime suspect in countless watermelon stabbings. While we can take issue with his "adamantium" claim in the video below -- unless he's also invented that metal alloy in our universe --  there's little denying the claws are pretty amazing.

They're 12-inch stainless steel blades activated by a Spider-Man-like palm trigger and powered by a compressed-air system housed in a backpack. Furze also shot a video that explains the entire process. Watch both below.

(via TechCrunch)