These compact new riser is part of our BabyKick set up. But can be used on 16 to 20 inch drums. It clamps onto BD hoops ONLY (does not function with metal tom or snare style hoops) and is adjustable for height- NO DRILLING REQUIRED. (spurs sold separately) May not work wel l with extra wide BD hoops - larger than 1.5 in wide without a custom cut out of your hoop. Aprox. min height is 2 inches from the floor, max around 3 inches.