1.High Quality Standard. 2.Competitive Price. 3.Comster-focused. 4.Any one of customers heplful advice will be full of use. specific :1.shape/type: circle,oval,slug. 2.surface treatment :anodizing,coated,polishing etc 3.moq:more than 10 Tons IN TATOL. 4.temper :O-H112. 5.hardness: 17-24 HB Round metal piece of aluminium