If you are a “small-batch” home roaster, this item works beautifully. Since the tumbler is glass, the desired roasting stage is easily observable; no more over/under roasted beans, or burned spots. The unit is solidly built, the end opposite the handle is cradled on rollers, stainless steel.Some particulars: The demo videos I’ve seen show the roaster used on those little portable butane/propane single burner camp stoves, which work fine, but what happens if the little LP canister runs out in the middle of the roasting process? Can the canister be changed out while the beans are still hot enough to finish without degrading flavor? Maybe the kitchen 4-burner gas range is a preferable heat source, or so I thought. What I discovered is that my kitchen range burners have a circular flame, which pushes the heat outward, not in the middle where it’s needed, directly under the glass tumbler; and the smallest burner was not hot enough to reach a French roast. - No fault of the tumbler!The solution to this was to place an old metal embroidery ring (4-1/4” X 1”) around the burner, which forces the flame upward, perfect!Of course, vintage steel embroidery rings are scarce, but Amazon has a variety of stainless steel cutting rings, i.e., biscuit, scones, cookie, crumpets.See fotos (2)