Tabby wrote:

The Medway Handyman wrote:

http://www.aldi.co.uk/uk/html/offers...4.htm?WT.mc_id...

How useful are these things really? I'll admit to not being convinced
its worthwhile.

I've never had any problem getting them to 'bite' using the bolt, they
look remarkably like the silverline one, the reviews on amazon aren't
too encouraging.