The 35W Roller brush bar is suitable for Dyson V6 DC59 newer-motorheads and V7 older-motorheads, have 4-hongs on the driveshaft. The 50W 4-hongs Roller brush bar is suitable for Dyson V8 Animal, V8 Absolute, SV10, V10 vacuum cleaner 50W quick release direct drive motor head.
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