Seat swivel work - base injected aluminium polished 5 castors hard floor. Seat with mechanism adjustable height, swivel and tilt offset. With supplement: skates instead of wheels. Hull plywood beech according to versions below. Also available with shell available with fully coated hull or dress up CF on the front or of the single seat according to materials below. Thickness of 1.2 cm - 40 Kg/m3 density foam. 76/89 60 60cm, 9Kg