I will post a couple of images and then post the data after which I will give shooting reviews with 3 air rifles - SDB 65, IHP 35 and Precihole Orion
The pellets came well padded in attractive coloured boxes. After removing the securing tape I had to prise open the lid with a screwdriver - it was not easy to unscrew. The interesting thing is a phone number on the cover - this is the first time I have seen contact information on the box of any brand of pellets.

The pellets were undamaged. I was particularly impressed by the smooth, uniform appearance of the Flat heads. See for yourself - I have a composite image below that shows both the flat heads and the round heads in each half of the image

Here are the statistics:
Diana Shot Round Head:
Skirt diamater: Average 5.55 mm (range - 5.45 to 5.6 mm) 60% were exactly 5.6 mm
Weight: 750 milligrams (11.6 grains for the grainiacs). This is a light pellet ideal for the muzzle velocity nazis.
Diana Shot Flat Head
Skirt diameter: Average 5.57 mm (range - 5.5mm to 5.6 mm)
Weight: 840 milligrams (13 grains for the grainiacs)
The pellets are available under the pellets section of http://www.kovibazaar.com
I will now post some photos of grouping of pellets with the IHP 35, SDB 65 and Precihole Orion.
The performance of the Flat head pellets was excellent in all 3 rifles. The groupings for Round head was somewhat less close, but it was still good for IHP and SDB 65. Surprisingly the grouping for the round heads for the Orion was not so good
I would recommend Diana Shot Flat Head as good quality pellets, accurate and consistent. Round heads are OK - but they did not perform well with the Orion