we need urgently for this heat sink for our foreign market, if you have the similar products with  40 mm * 50 mm * 15 mm (close size or smaller is ok, but no more than this size,and the exterior is not so important,but must good for heat dissipate) please contact us for more details, We 'll give you order soon, if everything is ok. price and quality,etc. we will be regular buyer if your first order quality is good