CrV double-sided blades create tight scroll saw-like curve cuts in wood and laminated wood. Run the saw forward and backwards for extreme cutting versatility. The backside teeth clear the kerf, making tight curve cuts effortless and clean. CrV Skeleton blades dissipate cutting heat like no other blade - they won't warp from frictional heat, making straight cuts more true. The parallel-cut, open framework design barely touches the side of the cutting channel to further reduce heat build-up, making these the straightest cutting blades available. Use for fast straight cuts in soft and hard woods. 8pc set includes CrV blades: double-sided fast cut blades (2x), double-sided clean cut blades (2x), Skeleton fast cut blades (2x), Skeleton clean cut blades (2x), case.