Compatibility: This V ball wheel compatible with compatible Dyson 20W/35W/50W Cleaner Head fits models V6 V7 V8 V10 V11 V15 Animal Absolute Detect Cordless Vacuum Cleaner. Easy to install: with a small Phillips screwdriver, remove the screw from the V ball wheel. Remove the washer, lift the V-ball wheel off the spindle. Put the V ball wheel on the spindle, insert the washer and secure it with the screw. Premium Quality: Made of high quality material, the color same as the cleaning head. Perfect Per compatiblemance. REPLACEMENT V-BALL WHEEL: compatible optimal per compatiblemance, replace the V-track wheel on compatible your Dyson cleaning head when worn out. Material: plastic : Package Contents: 2 x Replacement wheels 2 x Fixings 2 x Screws 1 x Screwdriver 1 x clean brush 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.