gears: Well-machined gears ensure continuous safety. The gears are particles and the soldering process significantly improves their service life. Applicable Scenario: This sawblade is specially designed for cutting solid boards, tires, PVC and other materials. 3 Piece: The package contains 3 sawblade, which you can use for a long time or replace as you like! The sawblade has a first class cutting grooves designed to ensure cutting speed and avoid deformation of the sawblade. At the same time, the edges are provided with circulars holes to improve heat dissipation and dust removal. High Mangan Steel Body: Integrated forming process of high manganese steel material with strong hardness and strong toughness., Manufacturer: Zeizafa