I have always found them very useful.
I must put right my howler from previous post that 8.5T was white!
That would have to be 9.5T wouldn't it.
In fact although it should be grey the actual former is clear.
That is the same with another I have here which is 1.5T , it is also clear.
Come to think of it I have never seen a brown one.
Red and Orange have confirmed sightings
