United States Pumice Company -- 100% Pumice. Removes Unsightly Toilet Rings When Strong Acid Cleaners Fail. No Chemicals Or Harsh Detergents and Won't Scratch. Reinforced Handle Stone Shapes Easily To Flat and Curved Surfaces.

• Can be used to clean almost any hard surface
• Great for removing unsightly toilet bowl rings
• Ideal for cleaning stubborn stains in sinks, tubs and showers
• Suitable for removing rock-hard mineral deposits around faucets and drains
• Can be used on lime- and algae deposits in swimming pools
• Helps clear rust and grime from workshop equipment, garden tools, metalwork and piping
• Ideal for removing unwanted paint from tile, masonry and concrete surfaces

Dura-Block Detail Brushes are densely filled with medium to very soft filaments, 2-1/2 trim. Designed to hold liquids and wash smooth surfaces thoroughly and easily without marring or scratching. All brushes are flow-thru style design. 1 tapered hole and 1 threaded handle hole. All brushes (except the 10 in. Angle) have soft vinyl bumpers to protect vehicle surfaces. 2-1/2 in. trim.

• Dura-Block detail brushes are densely filled with medium to very soft filaments, 2-1/2 trim
• Designed to hold liquids and wash smooth surfaces thoroughly and easily without marring or scratching
• All brushes are flow-thru style design
• 1 tapered hole and 1 threaded handle hole