The PS210-2-17 clutch is a centrifugal coupling intended for transferring power from the engine to the drive shaft on RURIS trimmers of the DAC series. Its basic function is to allow the engine to run at idle without turning the head with line, while when the engine speed increases (by adding throttle), the centrifugal force spreads the shoes and engages them with the clutch drum, thereby driving the cutting tool. Technical specifications: Manufacturer: RURIS Catalogue number: PS210-2-17 Compatibility: DAC 210, DAC 310. Material: Heat-treated metal alloy with friction linings resistant to wear and high temperatures. Advantages: Using the original RURIS clutch ensures that the tension spring is precisely calibrated for the specific weight of the shoes. With non-original (universal) parts it often happens that the trimmer "jerks" or that the head keeps spinning at low revs, which is a safety risk and puts unnecessary load on the engine.