High-Quality Material: Unlike standard HCS reciprocating saw blades, these blades are made of premium bi-metal for faster cutting, enhanced durability, and longer service life Efficient Cutting Performance: These reciprocating saw blades feature ground teeth and set teeth design for fast chip removal and maximum cutting efficiency Wide Compatibility: Designed with a universal shank, these blades are compatible with WORKPRO, DeWalt, Bosch, Makita, and most major brands of reciprocating saws Easy to Carry and Store: This saw blade set comes in a durable plastic storage box for easy access, convenient carrying, and organized storage, with extra space for additional blades How to Choose the Blades: The 3 pcs 6TPI silver Bi-metal saw blades are suitable for cutting wood with nails. The rest blue Bi-metal saw blades(14TPI/18TPI/24TPI) are suitable for cutting metal. The higher the TPI of the blades, the smoother the working surface, but the slower the cutting speed, Manufacturer: Hang Zhou Great Star Industrial Co.,LTD