sweeeeeeeeeeeeeeeeeeeeeeeeeeeettttttttttttt this would also be good for me  

Purchased many things from this store. Good items, good prices.
But for this grappling hook (which is found in many other stores and magazines) the rope is to small. Use it for tent lashing or throw it away. I climb with 1/2" to 5/8" rope. Which is tough for most people. Buy some kermantle about that size(33 to 35' length). Put a figure eight bend and good to go. Chain would better to get away from a knot.

Be sure to practice using your rope first, and always throw with an area for the hook to come down and not on top of your head.

For those that are asking about strength, I can not help you. But search for tensile/breaking strength of the diameter of the metal (mild steel, hardened) and you should have a good amount to go off of. Remember to take care of your equipment, the bolt and nut is the weakest part, and if you do not take care of it, it will fail you.

This is a heavy grappling hook, so for the most part it should support most people. But you must mind your point you are attaching the hook too, that could fail before your hook. Hope this helps.  

I bought this because I wanted to use it for climbing trees and buildings and what not. The first time I used it the rope snapped and I ended up with a sprained ankle. The hook it self is extremely sturdy but after twisting it too collapsed. The top bolt came off and broke (I may have twisted it a bit too far) but all in all it's a good hook for the price. I just recommend actually buying some climbing rope before using it.