[Product Name] Wire Core End Cap (Colorful) [Weight]0.15 grams [Material] Aluminum alloy [Usage] Mainly used at the ends of brake cable cores and shift cable cores to prevent the cable cores from unraveling after being cut, which can cause uneven stress on the cable cores and lead to cable detachment. It's a small gadget with a big use; don't underestimate this little guy, its absence can give you a headache. [Product Craftsmanship] We use a rack plating process, which is costly, but the oxidized products have a rich and deep color that does not fade.