A one-piece solid greyboard base material. Covering materials include black and green cloud embossed covering paper; impala lining paper; and an unsupported black PVC spine material. The compressor bar is tin-plated. The finger ring is aluminium<br><br>- Top quality lever arch mechanism and compressor bar – for security of contents.<br>- Finger ring allows easy shelf retrieval.<br>- Ideal for accommodating unusual sized papers