Hawk Pd® P28-8M-30-QT

Hawk QD Sprockets QD Bushing not included see required bushing
HTD synchronous belt drives combine the positive timing action of gears with the flexibility, speed and low noise level of belts. 
Continental ContiTech HTD sprockets are manufactured in various sizes, dimensions and capacities to meet industry requirements -- from speeds as low as 10 RPM to speeds over 5,000 RPM and horsepower ratings from fractional to more than 250 HP.
Inch QT Inch QD Bushings are used to fix sprocket to shaft with over 1,500 sprocket combinations available, making it easier to match the desired design speed.
Features: All parts are completely machined in cast iron; some parts made from steel, Positive, non-slip drive,  No lubrication necessary, non-stretch, Smooth operation: no chain drive that results in vibration and speed variation,  Clean operation, long-life expectancy, low maintenance,Quiet; no metal-to-metal contact.