Often called the "Poor Man's Cruise Control".  Made from machined 6061 Aluminum, available in triple chrome plated or black anodized.  Very simple design, easy to install and simple to use.  The iCruz rests against your break lever while locking your throttle grip in place, at the speed you want.  Allows you to shake out your right hand on long trips.
Available in small size for 7/8" bars and grip outside diameter of 1.25" or less.  Large size for all other 7/8" for grips larger than 1.25" and 1" bars any size grips.
 
Black P/N - ICZ-SM-ANO
Chrome P/N - ICZ-SM-CH