32 Piece Set1/2" Universal ShankEasy To ChangeFor Cutting Metal, Wood And Other MaterialsCompatible With Most Brands Of Reciprocating SawsContains 12 Wood Cutting Blades, 5 Wood And Nail Cutting Blades, And 15 Metal Cutting Blades (5 at 18-tpi, 5 at 14-tpi, 5 at 10-tpi)Bonus Adjustable Case For 6 And 9 Inch Blades