Skinny rollers are faster and more versatile than brushes for tight areas. The small diameter covers are great for spaces behind toilet tanks, appliances, plumbing fixtures, cabinets, and trimming. Handles are standard threaded for use with extension poles. Fabric roller covers are for use on semi-smooth surfaces. Refer to model No. 1770122 (SKU 790826) for 4" fabric replacement cover and model No. 1770121 (SKU 790950) for 6" fabric replacement cover.