These replacement blades feature a bi-metal design to give them maximum durability and longevity to make them an ideal blade for anyone cutting a lot or a little. These blades are ideal for any DIY project whether you are cutting through wood, brass, copper or aluminum so when it comes to your creativity, it will not be limited by the capabilities of your jigsaw blade. These blades also feature a universal shank meaning it will fit into any jigsaw adding to the capabilities and convenience of these blades. The tooth design makes for a durable blade that will not trap heat and material between the teeth making it an excellent tool for long lasting jobs. The thin design of the blades makes it much easier to make sharp turns when cutting through material to keep up with even the most intricate of designs.