Iwatani Corporation of America GM-5 Gas Match/Butane Lighter

I tried the Iwatani butane lighters because the ones I've bought at supermarkets develop problems before the butane runs out. The safety lock or trigger gets hard to move. The safety lock on the Iwatani is a rolling wheel rather that a slide-switch and is much easier to operate. Four stars for a well engineered product. It's disposable, so the quality is about the same as the competition. If it was refillable, I'd rate it 5 stars.