It tends to be highly valuable for mechanical tools like these. Think of this product more like hardware (nuts/bolts/screws, not PC hardware) than a standalone "product". Most people who have a shop or do a lot of tinkering keep an assortment of misc hardware around just so they have it on hand whenever the need arises. This falls into a similar category, so having a grab bag to be able to handle whatever potential scenario you run into would be incredibly handy.