This particular mixer is our SP20 20 qt. mixer. All of our mixers are gear driven, not belt driven. It delivers more energy from the motor to the planetary, which is what you want. With our mixers, we have several interlocks. The first is, the bowl has to be in the upward position for the mixer to run. The second interlock is with the bowl guard itself; the bowl guard has to be on and it has to be in the closed position to be able to turn the machine on. As with all of our mixers, the controls are mounted onto the front, not on the side of the mixer. The advantages to this are, with the digital timers, customers can see the remaining time on the timer from across the room. It makes them more efficient as their doing their different kitchen duties. Also, because we have a membrane keypad, it's a very flat panel. Therefore, it's a very sanitary, easy-to-clean part of the mixer. The bowl guard is also easily removed. It separates and comes apart so you can take this to the sink for easy cleaning. One of the nice features is that we do have an ingredient shoot that is permanently welded onto the bowl guard. It will not get lost; it will not get thrown away or broken like the ones that are clipped or snapped into place. We also have spring-loaded bowl clamps, not just very simple clamps. Because these are spring-loaded, once they're locked into place, there is no give at all with the bowl. Therefore, when you're mixing heavy products like dough, it will not shake or rattle. All of our mixers also have rubber feet on the bottom. This accomplishes two things: it keeps the mixer from moving around as it's mixing heavy products, and it also protects nice floors from scratches. With all of our mixers, we have three tools. Since it's 3-speed machine, you get a batter beater, a wire whip, and a spiral dough hook. We also have a #12 attachment hub, and there are two different accessories that we sell for that hub. We sell the main housing that can hold either a grater plate or shredder plate, and we have various sizes for that, or you can also get it with an adjustable slicing plate, which allows you to shred cheese and lettuce or slice tomatoes and onions. The other item that we have is the small grinder, which allows you to grind sausage, hamburger, or something similar to that. Like all Globe mixers, it comes with a full two-year warranty, not just one year. For information on this or any Globe product, please visit www.Globefoodequip.com.