There are 2 different types of black rubber wheel belt is available for CleanMate QQ-1 and QQ-2 units. Please choose the correct belt type on the photo when you placed the order. Click on the photo to enlarge it. CleanMate uses the same type of belt on both wheels.
The belt on left hand side (Type A) has big bump on inner perimeter. It is used for all CleanMate QQ2 models, as well as some later version of QQ1.
The belt on right hand side (Type B) has very small bump on inner perimeter. Type B belt is only used on earlier version of CleanMate 365 QQ1 machine.
You can remove the belt from the wheel to find the belt type of your CleanMate unit. If you are not sure which type to order, please e-mail to support@metapo.com