The infos about the heat sink: 1.the dimensions can be modified according to customers' requirement. 2.material type:Alloy:,6063T5,A3003S,A1100P,A1070S or according to your request. 3.with good performance of thermal spreading. 4.optimum design for different type,associated design parameter is provided. 5.surface treatment:anodized,powder coated,polished,mill finished,sand blasting,wiredrawing and so on. Kindly,pls contact us for further informations