Roughneck Professional Expanding Foam Gun - Thanet Tool Supplies. 

Roughneck Professional Foam Gun has a large, sturdy metal body with a comfortable soft grip, making it suitable for long working periods.
The Foam Gun has a nickel-plated aluminium body, steel trigger, brass barrel and non-return PTFE ball.
Its brass needle has a non-stick coating and an aluminium can holder adaptor.

Ideal for the following applications when used in conjuction with the job specific grade of expanding foam:
Filling :-
Gaps in brick, concrete, stone and plaster.
Gaps and holes around pipe work and duct work.
Spaces around window frames and door frames.
Deep joints before applying plaster or sealant.
Insulating :-
Internally for exterior walls.
Soffits and barge boards.

Supplied complete with:
2 x long plastic extension tubes.
2 x plastic nozzles.