Unfortunately not. The DC15 had a specific size tool diameter. Dyson started this then to foil after-market manufacturers making snide tools to replace their over-priced ones.
The DC15 wasn't made in big enough quantities to make it commercially viable for anyone to make that end after-market. Dyson wont supply that end on its own either.
The equivalent DC14 ones will be available very soon - I just happen to know -
but to replace a DC15 one now will involve buying a new wand unfortunately.
However, we do have a half dozen or more DC15 wands missing the back cable clip. We *may* have a good top there. Give Claire a call on 0161 223 6814 between 10-3 and tell her what colour you need, and ask her to look above the space on the stairs on the way to the kitchen.