This product comes with 1 dozen each of 3-size saw blades and beginning instructions right on the package. Unwrap one of the bundles of saw blades and carefully remove one of the blades. Loosen the wing nuts on the saw and insert the blade with the teeth pointing out and down. Slip one end of the blade into the fixture and tighten the wing nut, then apply pressure from the end of the saw so that the blade is guided into the other fixture. The blade should be very tight in the saw. The Artistic Wire Saw Frame everything you need to start cutting sheet metal, large gauge wire and a host of other metal, wood, and other products. Replacement saw blades are available.