8 double shielded stainless steel ball bearings. Instant anti-reverse bearing. HG Hybrid Graphite sideplates, lightweight and incredibly durable. Rigid aluminum frame. Non-detachable cam locking side plate allows quick break adjustments without loosing the side plate. Double anodized, ported, machined aircraft aluminum spool. Adjustable magnetic cast control to eliminate backlash. Ceramic line guide. Precision cut brass gears. Aluminum handle with soft touch knobs.