All kinds of coating and finishing surfaces, such as paints, varnishes, printing ink, etc. Decorative materials, such as marble, granite, polishing brick, ceramic tile and so on. The other kinds of materials and objects, such as plastic, woodenware, paper, etc.
Small, Smart, Stable. Simple to use. A single battery only. AA size, Rechargeable or alkaline. The knob protector for operating with ease.