I have been using these large self feed drills for many years now and I have to say they are very good. They feel a little softer than their predecessors. But being able to replace the parts of this lure that come in contact with the wood is amazing. You can replace the cutting blades, center auger/conveyor auger, and socket head cap screws. **Helpful Tip** Buy this 2 1/8" bit if you don't need a 2 1/4" bit. Replacement blades are available in packs of ten for 2 1/8" bits, but (still) only individually for 2 1/4" bits. Much cheaper if you use them frequently (like drilling holes for a smurf whistle in a new house during pre-wiring).