Compatible Models: Replacement ball wheels compatible with Dyson V10, V11, V15, V10 Animal, V10 Absolute, V10 Allergy, V11 Animal, V11 Complete, V11 Extra, Outsize, Outsize Absolute +, V15 Detect, V15 Detect +, V15 Detect Absolute, V15 Detect Extra, Outsize +, Outsize Absolute. Compatible with High Torque Vacuum Head: The replacement wheels are compatible with the V10 V11 V15 series 100W High Torque Vacuum Head and the V10 V11 V15 series 100W Anti-Tangle Comb Vacuum Head. Purpose of Replacement: Worn wheels on the vacuum head make the vacuum cleaner harder to push and scratch floors and carpets. Softer Material: V-shaped ball wheels are softer than the original wheels, helping to protect your carpet. Save Time and Energy: Timely inspection and replacement of ball wheels helps achieve optimal performance and extend the life of the vacuum head.