Continental® Blackhawk® HTD 8M, 14M sprocketsreplaces the Gates PowerGrip® HTD® sprockets. Nearly every conceivable industrial drive application where precise shaft synchronization is required. Blackhawk Pd® belts can also be used as an alternative to problem V-belt and chain drives.Unlike chain drives, Blackhawk Pd® belts and matching sprockets do not require lubrication. There is virtually no need for retensioning like there is for V-belt and chain drives. Install Blackhawk Pd® and watch your maintenance costs drop to practically nothing. See QD required bushing for sprocket sold seprately if applicable.