This is a genuine Dyson Stair Tool that will fit a DC19 DC20 DC21 

Part number 906960-11,   06960-11,   90696011 

OUT OF STOCK 

YOU CAN ORDER THE STAIR TOOL FOR THE DC08T which will fit your machine 

It is a lighter colour

Fits Dyson model DC19 serial numbers starting with 411 or 412

Fits Dyson model DC20 serial numbers starting with 360 369 371

Fits Dyson model DC21 serial numbers starting with 384

Supplying parts to New Zealand NZ