Scotch Brte Crs Miniature Brsh Pkg/12Hatho Miniature Scotch Brite Coarse 12 pkg You can use the Hatho Miniature Scotch Brite wheel to polish services without ruining delicate anatomical surfaces on dental appliances. By using low speeds around 5,000 rpm and light pressure the acrylic should not overheat due to friction. These brushes come in coarse, medium and fine to let you control the type of polishing finish you need. Features: Available in Coarse, Medium, Fine Available in 12 Pkg