61 Note Keyboard Case by Road Ready. The RRKB61W features our exclusive Z-Lock Foam System that allows you to customize the inner length, width and height ( length adjustable from 38″ to 44″, depth from 10.5″ to 16.5″, height from 3″ to 5.5) of your Road Ready case to accommodate virtually any model of Roland, Yamaha, Korg, EM-U and other 61 key keyboards. Simply lock or un-lock the layers of Z-lock foam to create your perfect custom fit. And for sleek, stealth mobility we equipped each case with our unique low-profile wheels. Upgrade your keyboard not your case.