Instruction: Answer the given question using the supporting document.

Input:
Question: I want to use these bags to hold rocks. Can these bags hold up to 50lbs? Will they tear easily when rubbed against a sharp edge of a rock?
Document: These bags are strong and hold up over time. Fast delivery. Very professional company to deal with. Have bought this product multiple times and will continue to use Trademark Supplies as long as I need this product.
I'm going to be using these bags for things like sunflower seeds and seed oats, hoping to re-use them several times. The material is a little thinner than I expected so they won't hold up as long as I'd hoped, but they'll be OK.
I use these to ship cat perches I make and sell on Etsy. This has been the best solution thus far. I bought my first batch from an different company and they were a little wider so I believe these are probably 16.5&#34;, but they work. They do have a cleaner edge.
I bought these to use for sandbags exercises. I doubled them up and they seem to hold up well when thrown or dropped.
These are good qualityy bags  that I want on hand should the need arise as  the weather is unpredictable and ya never  know.
I ordered these sandbags for our fireworks display as a safety precaution to hold down the tubes to make it a safe display.. These work very well.. The seller is quick at shipping them out and we will deffinately use this seller again..
I bought these to use around the outside of our greenhouse, and after being exposed to the sun for less than two months they're deteriorating very badly. We double bagged them in the first place, and unfortunately both layers are already brittle and have several tears throughout. I can literally tear the material like paper at this point.
Great Bags.. very heavy and hold lots of sand up to about 50 lbs... has a tiestrap attatched to it. Just what I needed
I thought that these bags would hold up being covered but no dice. They are like paper now. They were solid when I filled them but now I have a pile of sand with some bags wrapped around it.
Not certain what the complainers are putting in these bags that they are falling apart in a couple weeks but I bought 100 of these because I figured they would not hold full. They hold full and 6 months later still holding strong.
Answer: These bags will do better holding rocks than sand. 50 lbs. no problem. Not sure if they will cut on sharp rocks.