High material: The saw blade is made of high-strength hard alloy steel, with good durability. Even under harsh conditions, it is very safe and easy to use. Usage: This durable high-speed steel bimetallic is very suitable for soft metals, wood, PVC boards, gypsum boards, and gypsum boards. After sales service: We focus on product quality. If you have any questions, please contact us via email or Q&A, and we will reply as soon as possible within 24 hours.