Office Chairs B-1000 and B-2000 The office chairs are similar to our blood collection chairs. They also have continuously height and tilt-adjustable, ergonomically-designed backrests. The five legs of the star-shaped base (Ø 610 mm) are made of die-cast aluminium and ensure greater stability. - Article No. B-1000 and BR-1000 have a black aluminium finish base. - Article No. B-2000 and BR-2000 have a polished aluminium finish base. They are equipped as a standard with braked hard double castors for soft floors but are also available with soft castors (for hard floors), or with gliders (such as on the blood collection chair) at no extra charge (please specify upon ordering). The office chairs: BR?1000 (2) and BR?2000 (4) differ from B?1000 (1) and B?2000 (3) in the armrests. The office chairs under article numbers starting with BR have black armrests. The corresponding product descriptions and article numbers can be found in the AGA product catalogue on page 75. Interested? Contact us at +49 (0)5731 82283 or [email protected]. We'll be happy to help you further.