Description: speicification: material: hss color: sliver maximum rpm: 20, 000 made from strong hss high-speed-steel, durable and firm ideal for cutting hard materials like wood, plastics, laminates and aluminium, etc. Suitable for use in carpentry and crafts size: hole diameter: 6.35mm mandrel diameter: 3.17mm blade diameter: 22mm, 25mm, 32mm, 35mm, 44mm, 44mm quantity: 1 pc included: 1 x mandrel 5 x circular saw blade