it's designed for cutting both dry hard and soft wood and also ... 500mm(4"-20") Body thickness: 1.5-3.0mm Cutting wide:1.8-3.2mm Hole dimater : 20,20/ ... : 1. Carbide tipped cutting teeth, bright polished surface, shot blasted. 2 .Longer life than steel blades. 3 .Tooth shape: ... ATB, Square Top Tooth, TCG, etc. Other tooth shapes available. 4.For cutting wood, plastics ...