Length : 178mm
Diameter : 64mm
Weight : 893gram
Filling : 160gram (several different fillings known)

Photo right (Mk1) © Norman Bonney.
Photos below © Paul Spence .

Check out Paul's experimental version.

Photos below property of Siegfried.

Shown above is the propelling cartridge as was used to fire most types of ww2 rifle grenades. Thanks Glenn!

The B/W picture below shows a team launching No.68 grenades.