supply of revolving chairsrevolving chairs,revolving chairs with following specifications and gem id: 5116877-58888451499. gene ral requirement type of chair high back understructure tilt mechanism synchronic tilt mechanism locking mechanism 3 position locking seat depth adjustment fixed type revolving mechanism designed wi th 360 degree-revolving type height adjustments pneumatic/hydraulic pedestal base aluminium die cast ty pe of chair base with castor twin wheel castor material nylon number of twin wheel castor / studs (nos) 5 minimum diameter of twin wheel castor (mm) 50 mm minimum thickness (in mm) of ms plate joining the ba ckrest with seat of the chair 4 millimeter seat seat base material hot pressed plywood seat material mould ed pu density of pu used in seat (kg per cubic meter) >4040400450450450550 actual backrest height 780 millimeter backrest upholstery material mesh fabrics upholstered material backrest colour black armr est armrest type and arm movement adjustable (up and down) armrest understructure material pp - polyp ropylene armrest top material pu - polyurethane warranty warranty period in number of years 1 year te st repor => limited