True large arbor design for faster retrieves. Machines from ultra-durable barstock aluminum. Perforated for lighter, easier handling. Highly polished heavy-duty stainless steel caliper disc drag (models 678 and 890). Whisper smooth single caliper highly polished stainless steel disc drag (model 456). Carbon Fiber (models 678 and 890) or rulon (model 456) drag pads. Palming rim for added drag pressure. Advanced barstock-machined finish for the ultimate in reliability and durability.