1.Designed to clean all types of blinds washable and rust proof insert mini-blind cleaner, one roller between each slat. Move mini-blind cleaner and forth to wipe blinds clean. Remove mini-blind cleaner from blind. 2. Notes: When roller becomes dirty, twist rollers to new cleaning surface. When roller becomes completely soiled, remove and wash off using mild soap and warm water. Heavy soiled blinds may require washing. 3.Use On: Window Conditioner, Venetian Blind Blade, etc,Size: 13.5cm x 16cm/5.31 inch x 6.3 inch (.)(5.4x6.4x0.6inch), Light weight(0.2lb) 4.Detachable, when roller becomes dirty, twist rollers to new cleaning surface. When roller becomes completely soiled, remove and wash off using mild soap and warm water 5.Mini-Blind Cleaner with rollers, use special microfiber fibers, strongly attracts and holds dust, 't drop hair, 't rub off Color: Blue Material: plastic Package Contents: 4 x cleaning brushes 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.