Brass copper & alloy [i] ltd under the is a registered trademark hex manufactures various types of electrical accessories, earthing equipments, lightning protection systems, copper and other ferrous & non ferrous metals. Being a part of that driving heads / studs / tips, dowell pins are specially manufactured from high tensile steel to ensure force from power hammer. Dowell pins are also made from high grade brass. They comes in sizes 10mm, 14mm, 5/8", 3/4" etc.