Pretty sure the Mamba has always been 58". It will have the length marked on the riser.

That is a great price on the bow, but in my experience (I've owned several Martins, and shot lots more) they don't like to be drawn much past 28"--the one's I've had stacked a lot past that.

What is the draw weight? Martins are also known to pull a few lbs heavier than marked. Speed is good with them.

If you are just getting into it, the only way I'd buy that bow would be to trade it for a different one. It's a goodbuy, but if you can't shoot it then it's not worth $5 to keep. I'd go with arecurve at least 60" long and about 40# at your draw.

One other thing--if it's marked much over 55#, then it will be harder to trade on. The trend for the last several years has been bows that pull 55# or less.

Chad