Just spin to open.  It's something we're all familiar with.  Since you were school age, you've likely used Master Lock 1500 combination locks to secure your belongings.  The 1500 is the world's best selling combination lock, and the inexpensive choice for school and gym lockers.  When parents think back-to-school, they think Master Lock combination locks.  It's the best way to ensure kids get through their school day without the fear of being victimized.  Getting your Master Lock combo lock before school begins has become an annual tradition, and some of us probably still have that first Master Lock combination lock from our junior high and middle school days.  Some of us are even still using the same one.  A true testament of the quality you can count on from Master Lock.