In order to save our customers freight and raw material costs on very large metal requirements, TEKCAST also manufactures Zinc Master Alloy Metal Concentrates: TEKALOY MA-I and MA-IZ. These are metal additives, metallurgically designed to be melted and mixed with any of the standard commercial grade ZAMAK or MAZAK No.3 or No.5 Zinc Pressure Die Casting Alloys available locally and worldwide. Complete mixing instructions are provided by TEKCAST. Sold by the LB, minimum order 50 LBS