ITEM NAME:4mm Solid Brass Round Bar, 10 inch/25cm, Abrasion-Resistant img *{margin:0;padding:0;.1 Piece Brass Round Bar. It is the combination of machinability, thread rolling and knurling. Made of premium brass, good strength, high resistance to corrosion. Color: Brass. Material: Brass. Suitble for high speed machining operations and intricate parts of manufacture.