A magnetic oil filter drain plug and/or an oil filter magnet add one more potential layer of engine protection. Do they work? Residue on the drain plug says yes, but it’s anyone’s guess with the oil ...

Marumi's amazing Magnetic Graduated Neutral Density use science, rather than slots ...

The promo video for Xume's quick-release camera filters starts off in typical infomercial style, with a klutz ham-fistedly trying to do something that's actually pretty easy. But this doesn't take ...