Product detail:Management Chair
  Base
  -Aluminium Polished Base (BC3)
  -Nylon Flat Base (NB5)

 E-pron Sychron Mechanism (5 Position Locking) with Back Ratchet (M7RB1)

 Adjustable Armrest
  -6 Height Adjustable Armrest (58A)
  -7 Height Adjustable Armrest (65A)
  -Rotated Armrest (89A)

Heavy Duty Nylon Castor (R1)

Dial Up Lumbar Adjustable (LA1)

Seat Pan Sliding (SS1)

Moulded Seat Foam (MS1)