Ideal For 0 Radius Or Fret Work Spiral Blades Blades Are Twisted So Teeth Point Outward In Every Direction. A 360 Capacity Allows Cutting In Any Direction Without Turning Your Work. Recommended For All Types Of Material Including Wood Plastic Non-Ferrous Metals Plaster Bone Etc. All Blades Are 5" Long And Have Plain Unpinned Ends.