Reel unit for spinning reel

A spinning reel being adapted to be mounted to a fishing rod, said spinning reel comprising:

• a handle;
• a reel unit rotatably supporting said handle and being adapted to be mounted to the fishing rod, said reel unit including
• a housing unit forming a mechanism accommodation space in an interior thereof,
• a drive mechanism being arranged inside said mechanism accommodation space for transmitting rotation of said handle to said rotor, said drive mechanism having a master gear non-rotatably coupled to a master gear shaft,
• a first lid made of a metal and coupled to said housing unit so as to interpose said master gear with said housing unit, said first lid rotatably supporting said master gear shaft,
• a second lid made of a synthetic resin and coupled to said housing unit so as to close said mechanism accommodation space, and
• a rod-attachment portion being formed integrally with one of said housing unit and said first lid, said rod-attachment portion being adapted to be attached to the fishing rod;
• a rotor rotatably mounted on a front of said reel unit;
• and
• a spool disposed on a front of said rotor to move front and rear relative to said reel unit.