ITEM NAME:20pcs/Set 0.1mm-3.0mm, 0.1-1.0mm High Quality Hard Alloy PCB Print Circuit Board Description: 20pcs/Set Steel PCB Car.High hardness, wear resistance, intensity and anti-bending. Suitable for wood, aluminum, plastic, etc. Material: Steel. People always bought together with. With good milling and cutting performance, ensuring high efficiency.