Reverse teeth eliminate chipping on the underside of the workpiece, and cut on both the upstroke and the downstroke. Designed after the PGT Precision Ground Tooth blades, their wide teeth-spacing keeps the blade from bogging down. Precision milled to cut easily through both hard and soft woods. 

• 5" blades, 12 Blades Per Pack

• Precision milled teeth

• Wide-spaced, ultra-sharp teeth clear the shavings quickly.

• Diagonally cut ends allow easy feed through starter holes and make installation a snap.

• 12 blades per pack

- See more at: http://www.woodcraft.com/Product/147023/olson-64702-universal-scroll-saw-blade-017-x-046-x-7r-x-86-tpi-12-pack.aspx#sthash.cE97oYyT.dpuf