This unit carries a roller chain around a fixed guide point, transmitting no drive torque but supporting the chain strand under tension. The sprocket, made from steel or sintered iron, is mounted on a bore of 16.2 mm with an outside diameter of 40.0 mm, and the complete unit weighs 0.31 kg. The compact size and low mass make KSR16-L0-12-10-13-16 suitable for guiding or tensioning chain runs where space around the chain path is limited. Since the sprocket body accommodates the bearing internally, installation is reduced to fitting the unit onto its fixed axle, keeping alignment and maintenance straightforward.