Features BRASS WIRE MATERIAL: This cleaning brush is made of brass wire and is specially designed for cleaning the hot bed and nozzles of 3D printers. FOR CLEANING NOZZLES: Ideal for 3D printer nozzle cleaning, heat the nozzle to 190°C when using the brass brush to clean the nozzle. MULTI APPLICATION: Brass wire brushes set with a wide range of uses, can be used to clean unfinished metal parts, paint, grease and more. NON SLIP: Small brass brushes, similar to toothbrushes with non slip finger handle design, easy to hold and comfortable for users to use. HANGING HOLE DESIGN: Scratch wire toothbrush is a convenient tool with a small hole at the end, can be hung to save space and easy to store. Specification: Item Type: Brass Brush Material: Brass, ABS Package List:10 x Brass Brush Note:1. Manual measurement, please allow some errors.2. The brass wire brush may be deformed during transportation, but it will not affect the use. Package List 10 x Brass Brush