The Yamaha PPC-4A Memory Lock is a simple, yet crucial piece of the gigging drummer's hardware arsenal. Your kit takes long enough to set up as it is. Don't make everybody wait for you to get your hardware setup at a particular height. Use the PPC4A memory lock to instantly recall the ideal setup position for your drum gear and spend more time rocking...or jazz-ing, or whatever. Get all of your Yamaha hardware from the professionals at Drum Center of Portsmouth.