Dunhill Red flints are slightly wider than standard lighter flints and are specifically designed to work with your Dunhill Rollagas lighter. It is also a condition of the warranty that you use them. No other flints are wide enough and may jam your lighter; similarly, Dunhill flints are too large for most other lighter brands and may cause damage.
Dunhill flints are slightly softer than cheaper competing products, which means they produce a better spark and cause less wear on the flint wheel. This helps extend the time between servicing.
