72-1/2" (72-5/8") Band Saw Blade for wood. Olson Hard Edge Flex Back Premium high carbon steel blades with ground teeth hardened for fast clean cutting and long life. The back of the steel band retains its flexibility allowing it to run on the saw with less breakage.Premium .025 gauge for best performance and durability. Size 72-1/2" (may be 72-5/8"). These sizes are interchangeable as the difference is totally negligible.