If you've ever used a Black Diamond ice screw, either the original Express or the speed-handled Turbo you'll appreciate just how good they are with cunningly tapered internal bore to shed the ice-core quickly and easily on removal and razor-sharp teeth.

Screws like these have revolutionised winter climbing, by being both easier to place and impressively strong once they are anchored in good ice. But have you ever wondered how they're produced?

Made In The USA

This video from Black Diamond's Salt Lake City production plant shows you just how the screws are manufactured, finished and then batch tested to ensure both the screws themselves and their hangers are up to scratch.

Brilliant. If you have a thing for how stuff's made, you really ought to watch it! Enjoy :-)