The 4-leg frame of the swivel chair and the bench chair is made from structural steel (Ø 22 mm) and comes with a chromed (CR), black (N) or aluminium grey (VAD) finish. The fixed chair is fitted with non-slip glides in PE (Polyethylene), which can be felt-based or smooth. The anti-panic writing tablet has an aluminium hinge and black ABS tablet. The swivel chair has a 5-star base (Ø 64 cm) in Nylon or aluminium with polished finish (top only, the bottom is black). The benches are composed of a beam (80x40 mm) and inverted “V” legs, with adjustable glides. The PP versions have provision for Polypropylene seat and backrest in 6 colours (CL1 fire-retardant version in black or grey); the IMPP, IM and RETE versions come with the plastic parts in two colours - black and grey. The armrest frames are made from steel rod (Ø 12 mm), with PP arm pads in the same colour as the seat.