one impregnated paper material, single-use version -- and varying only slightly in appearance, became the standard volume for most drop tanks in Luftwaffe service, with a rarely used 900 L, fin-stabilized large capacity drop tank used with some marks of the Messerschmitt Bf 110 heavy fighter and other twin-engined Luftwaffe combat aircraft.

The first drop tanks were designed to be discarded when empty or in the event of combat or emergency to reduce drag,