6pc 1/4" Shank High Speed Steel Mini Saw Blades with Mandrels for Dremel Fordom Rotary Tool Circular saw blades7/8" (22mm), 1" (25mm), 1-1/4" (32mm), 1-1/2" (35mm), 1-3/4" (45mm),2''( 50mm) Mandrel Arbor Size: 1/4",Mandrel Shank Size: 1/4", Lenght: 2" Maximum RPM: 20,000 This unique great tool set is ideal for precision cuts in wood, aluminum, brass, copper and more! Highly durable, sure to last for a long time!