On my non-calibrated kitchen scales it comes in at 2-1/2 oz or 70gm and 7-1/8" long but you need some length to get under the stove.
Mine is all metal so I would expect the modern models to be a fraction lighter.
They, like the above stove, reek quality, you would be hard put to damage them, probably have to drive over them a couple of times.
Designed to light kitchen stoves in the days before pilot lights I also have as back up one used by my Grandmother some forty five years ago. It has sat in the bottom of my toolbox for at least the last twenty years and I have just taken it out and it worked, as expected, first try after all that time.