5 Star Pencil Sharpener Pocket-sized Metal for Max. Diameter 8mm Double Hole [Pack of 5] £1.47 @ Amazon (penNpaper)
£1.45 from seller on same page but not sure if I could post that one. I posted this deal a couple of months ago but it is even cheaper now
Pocket-sized metal wedge sharpener. For pencils up to 8mm in diameter.