They are intended for usage with YW509 model. I bought the YW910. Thus the mop is a little bit to large. But I simply cut off a little each corner, keeping the rounding and now its fits properly. It even has a bonus benefit. The cleaning mop exceeds the device by 5 millimeters on each side, which helps to clean the window frame a little.. See images with YW910 device, the new and original cleaning mop in comparison.

They are intended for usage with YW509 model. I bought the YW910. Thus the mop is a little bit to large. But I simply cut off a little each corner, keeping the rounding and now its fits properly. It even has a bonus benefit. The cleaning mop exceeds the device by 5 millimeters on each side, which helps to clean the window frame a little.. See images with YW910 device, the new and original cleaning mop in comparison.

They are intended for usage with YW509 model. I bought the YW910. Thus the mop is a little bit to large. But I simply cut off a little each corner, keeping the rounding and now its fits properly. It even has a bonus benefit. The cleaning mop exceeds the device by 5 millimeters on each side, which helps to clean the window frame a little.. See images with YW910 device, the new and original cleaning mop in comparison.

Size was okay.

Size was okay.

Size was okay.