The Trout Pro from TROUTMASTER are manufactured with the SPRO S-Drive system which makes fishing with this reel very pleasant. With 4+1 stainless steel ball bearings, 1 of which is Japanese precision bearing on the gear, which makes turning even smoother. 4+1 Stainless Steel Ball Bearings, Plastic Reel Body and Rotor, Shallow Aluminum Spool, S-Curve Reel System, Stainless Steel Shaft, CNC Aluminum Handle.