Replacement Dyson DC17 Belt (10mm wide) Package of (1) replacement Dyson DC17 10mm wide belt. Replaces Dyson part number 11710-01-02. The 10mm wide belt and will not fit older DC17 models, which use the 8mm wide belt, unless the roller brush is replaced with the new roller brush, which has the 10mm wide track (Dyson Part Number 911961-01). Made to OEM specifications by Vacuum Fix.