Provides a fixed idler point for roller chain drives, carrying the chain over a plastic sprocket mounted on a needle roller bearing support. Bore diameter is 16.2 mm, outside diameter 40.0 mm, and net mass 0.097 kg, giving a compact unit suitable for direct shaft or stud mounting. The plastic sprocket body runs quietly against the chain links and does not require lubrication at the contact surface, while the internal bearing supports smooth rotation under the guided chain span. Its light weight and small envelope make KSR16-L0-08-10-16-22 suitable as a return or tensioning idler in chain drive layouts where low mass and low-noise operation at the idler position are required.