This kit includes cutter blade holder, movable cutter blade, removable fixed blade, 2 cutter guides, 2 fixed blade shoes, 2 fixed blade shoe springs, 2 button head screws, 2 socket head cap screws, and 1 hex socket set screw.
To replace the blades pick one of the following:
Every month or two remove the blade guard and apply a drop of light weight oil to the back side of the movable blade to keep it clean and free from built up adhesives from the tape, and also add a drop of oil to the brass guide rollers. If you find material built up on the cutter blade clean with a solvent like lighter fluid prior to applying oil.