... efficiency and a good working environment,ect.About product: -.Diamond saw blade:1. stone: granite , marble , limestone , etc ... blade , multi-blade , cutting disc , saw blade Frame saw blades/Gang saw blades: suitable for cutting mable,limestone,sandstone,etc ... road cutting machines; Angle Grinder/Circular Saw/Masonry Saw/High speed power saw/walk behind saw. Mainly used for cutting concrete,asphalt ...