the purpose of these darts is to be spares or replacements to the ones you get with the gun (which frankly aren't enough). These darts do exactly what they need to and a perfect for reloading clips. The only problem is they don't come with spare clips/ mags to slot them into. There is a kit for £15 that gives you the same amount of darts I think, but also two mags to load into your clip system gun of choice. Basically these are good replacement darts if you break some (quite easy, so it is good that they are so cheap) and also good if you can quickly load them into a mag, but the £15 kit or the bandolier kit would be a much better option.