BIGSTAR20 operator swivel chair, point synchronous mechanism, max. load 150 kg, blue. Supplied = flat pack. Cover material = polyester. Colour of covering = blue. Frame colour = polished aluminium. Frame material = aluminium, polished. Seat mechanism = synchronous mechanism. Frame design = with castors. Height adjustment range = 440 - 520 mm. Type of arm rests = with arm rests. Back rest height = 700 mm. Fittings = lumbar support. Seat depth = 460 mm. Seat width = 540 mm. Shape of seat shell = sliding seat, flat seat with knee roll. Conforms to = DIN EN 1335 part 1 - 3, DIN EN 12527+DIN EN 12529. Design of castors = castors for soft floors. Max. load = 150 kg. Period of use/day = up to 8 hours. Product type = operator swivel chairs. Very high back rest. Extra large seat surface. Armrests with soft padding. Max. load 150 kg. Easy care fabric cover. Five-star base made of polished aluminium. Castors for soft floors as standard. Point synchronous mechanism The synchronous adjustment of se