The S.T. Dupont Resistance for E-Slim Deluxe Lighter is a spare part exclusively designed for the French brand's E-slim lighter range. If the original resistance of your S.T. Dupont E-Slim lighter is out of order, you just need to gently remove it and replace it with this new resistance, so that your E-slim lighter works perfectly like the first day! It is recommended that you do not touch the filament, which is the most fragile element of this component. Proceed with delicacies to insert this component, without forcing it. Furthermore, this E-Slim lighter should not be used for cigar lighting.