Adjective modifier

• exterior: The kit consists of reservoir pot, inner pot, exterior air pump, clay pebbles, delivery tubes and full instructions.

• free: Give those biceps a workout too with our members ' only special offer: free air pump worth £ 4.95 with every order!

Noun used with modifier

• brake: However the Westinghouse air brake pump was built in London.

• diaphragm: The diaphragm air pump can be fitted with tubing an airstone to produce a glorious array of bubbles.