Note:- since the link is a multi - attribute product, please pay attention to the title & description & then purchase. Choice available check title, mentioned in brackets at the end of the title. 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 suitable for use in carpentry and crafts size: hole diameter: 6.35mm mandrel diameter: 3.17mm blade diameter: 22mm,25mm,32mm,35mm,44mm quantity: mandrel, circular saw blade