Shimano Cardiff Ci4+ spinning reels are for quick response in handle turn for trout fishing. Its rotor is made of engineering plastic Ci4+, to achieve both weight-less and solid. 1000S is for calm water like ponds and lakes. 1000SHG high gear models are for rapid streams. C3000MHG is for large lakes.
Reinforced CI4+ engineering plastic body 
Hagane metal gears
X-SHIP effiient gear system
Rigid support drag system
MGL magnum light rotor Ci4+
X-protect water repellant body system
Rotor brake in casting
AR-C long cast, trouble free spool
SR one-piece bail wire
S A-RB corrosion resistant ball bearings
Saltwater fine
"I" shaped cork knob