It does what it says on the packet I think..( if it is still running as the www it came with doesn't work , but worth a chase up)
Camera Bellows Ltd Unit 3-5 St Pauls Rd Birmingham B12 8NG Tel: 0121 440 1695
Also could be useful:
http://www.rolandandcaroline.co.uk/html/isolette_bellows.html for pdf 'how to' as guide for a talented bookmaker.........
