Alloy steel and suitable Tungsten Carbide tips.
Our compony's products sales all over the world, especially the button bits are reviewed as the most favourable one by our customers, and they are matched with home and abroad well-known manufacturers to ensure the product interchangeability and commonality. A great variety of produce lines, it can be volume produce according to the samples to meet customer needs, if you want to know anyting about our products and our compony, don't hesitant to contact me, i'll be glad to answer all your questions.