According to legend, Ben Franklin, in an attempt to prove that lightning was electricity, flew a kite into a thunderstorm with a metal key attached to the kite string. Lightning struck the key and the rest is history. The Rough Ryder Ben Franklin’s Key to the Future Knife features a 440A Stainless Steel 2-3/8" Spear Point Blade with Thumb Nail Groove and Slip Joint Lock. The handles are Black Composition with Brass liners and Lanyard/keyring hole. It’s 3-3/8” closed.