Two 4.5'' shell casings.

How far does the cartridge go when firing a gun? - Quora

SHELL CASINGS – Artillery Works Co

British 4.5 Inch Naval Artillery Brass Shell Case - Sally Antiques

4 Clever Uses for BULLET SHELLS!

Royal Navy 4.5 Inch Shell Case - Ruby Lane

File:Shell casing of 9mm, 40S&W, and .45 ACP II.JPG - Wikimedia Commons

Shell Cases Archives - MJL Militaria

RN 4.5 inch Shell cases - Naval section - HMVF - Historic Military Vehicles Forum

Ammunition

9mm shell casings Stock Photo by ©dennissteen 7709883

Found two baby plants growing inside a .45 shell casing in my yard : r/Miniworlds

A large Russian 7 inch shell case, together with a pair of British 4.5inch shell casings: (3)

British 4.5 Inch Naval Artillery Brass Shell Case - Sally Antiques

Three pieces of WWI trench art, to include two Howitzer 4.5 shell casings converted to ashtrays and