High quality brass nut 1.Size,M4-M60 2.Material:brass, copper ... .SGS,ISO Certificate 4.Surface treatment:Plain or as request High quality brass nut 1. Standard:DIN,ANSI, BSW, JSB ans ISO ... .6. Surface treatment: plain7. professional manufactuer, offers better quality and price ProductHigh quality brass nut Materialbrass, copper FinishPlain or as request SizeM4 ...