Mark I have never been a fan of SnapOn too expensive for me.

The boxes are from Unipart(Partco). They are roll cabs with the wheels taken off and then set on a breeze block base.

They cost £160 + vat each. The photo shows 5 boxes total cost £800 + vat.

That wouldn't go far at SnapOn. So if you don't suffer from the SnapOn fetish its the only way to go.
Paul...