CRL FEIN® Gator U-Blades will have you done with your toughest job faster. The serrated leading edge performs the cut faster and smoother than other oscillating blades. They have been engineered to work well from the exterior with outstanding durability, hardness, and flexibility to hold up to the toughest jobs. Sold only in packs of two blades. Important Notes: These blades are not warranted against breakage and credit will not be offered for broken blade claims. The blades are made from tempered steel that is strong but brittle and will break if flexed to an extreme.