An oven with telescopic rails help you if you take baking trays and racks from the oven. You can easily slide the rails out of the oven without tipping over. That's useful if you want to add some herbs or salt to your potatoes, or when you have multiple trays in the oven at once. You also won't burn your hands or arms as fast on the hot interior of the oven. You can find ovens with 1 or more telescopic rails on this page.