Cast iron and other difficult to process metal materials.With cost-effective and practical.Provides better panel separations than a panel cutter.High strength and hardness.Durable in use.Use:iron,cast iron,alloy steel,carbon steel,die steel.Color:silver,blackMaterial:6542 steelPackage Contents:2pcs x Rotary Spot DrillOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.