Go to www.blackanddecker.co.uk select customer service then select instruction manuals. download your models manual and it should have an exploded view of the screwdriver.
Pity you didn't include the model number in your question I could have checked I'm on b&d's site now switching between this site and b&d's
if it's not on the site a help section comes up for ordering manuals but ask first if it has an exploded view of the tool.
failing that go to a local outlet and look at the screwdrivers in store and select the one that that match yours and check the manual out. everyone does it.
bob
January 2005