I would have liked a deep clutch for every bit, but of course you only get them when you order them, so I don't deduct a point for that. When used on "sticky" woods (e.g. fresh pine) the countersink cutting channels may clog and require cleaning. A deep sleeve makes the situation even worse by blocking the self-cleaning of the cutting channels. It still works but takes a little longer when blocked. Nothing wrong with that, just wanted to point that out. I have a feeling there might be a way to design it so the wood doesn't get caught under the depth collar. Additionally, they are great for creating a 16 x 12 foot raised bed. We drilled probably 600 holes in new pine using two of the 4 drill bits.