Models: Fit for Dyson V10, V11 and V15 High torque suction designs for 100W high torque models, not 20W, 35W or 50W direct drive suction. Check the power and model of the suction head before purchase to ensure a perfect fit Product material: The use of enhanced high-density materials, excellent durability, can run smoothly and effectively while ensuring long-term performance. Worn rollers or connectors can impede the optimal performance of the vacuum cleaner, potentially resulting in inadequate cleaning. Timely replacement of damaged components restores full equipment functionality and enhances the efficiency of the cleaning process Easy installation: Installation is very convenient, only a simple tool can complete the replacement, solve your troubles Colour:Gray Material:plastic Package Contents: 2 x Replacement Ball Wheels, 2 x Fixings And Screws 1 x High-torque tip-motor channel interface Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.