Length : 178mmDiameter : 64mmWeight : 893gramFilling : 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.