Feedback Sports Ultimate/Rakk Bicycle Storage Stand: Wheel slot accommodates all types of bikes - road, mountain, cross, BMX and tandems. Holds 20 mm road tires up to 2.4" wide MTB tires in size 20" to 29" wheels. Spring-loaded arm holds bike by the tire. Easily holds front or rear wheel without the risk of scratching rim or spokes. Hands free use. Simply roll the bike into the wheel slot and the swing arm holds it steady. Perfect in the garage or an apartment for convenient storage of one or more bikes. Clip two or more RAKK stands together to create versatile garage storage or retail floor display. Three point contact locks in the wheel. No more "domino effect" in large store displays.