Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Will these work to raise just the head of the bed 5" and the foot only 1" (to prevent the foot from otherwise gliding & digging into our wood floors?
Document: I found that even double stacked, they didn't raise the bed high enough to slide the flat storage containers under the bed. It's really only like having in 1.25 inches using two because they sink into the carpet and carpet pad. Thought about buying a second set to get it higher, but then it's $9 a leg to get only 3.25 inches more space. Ordering a 5.5 inch riser set for about $5 a leg. Will find a purpose for this shorter set.
Black Bed Risers - Set of 8 (Black) (1&#34; H x 4&#34; W x 4&#34; D). Bought two sets of these to raise my king bed another 2 inches off the ground. My wife hated the fact that the bed skirt was always on the ground. These work great. The only problem is that they do squeak a little when getting into and out of bed.
Solid and sturdy And doesn't seem to scratch the wood floors. Nice to have so much adjustment for height needed.
Been looking for a 1" riser for a long time. Could only find 6" ones at local stores. These are a bit bulkier than I expected (hence 4 instead of 5 stars) but they seem strong and sturdy. They raised the bed the perfect height and don't slide around on the hardwood floor, so they're great.
This was what I was looking for. Tried to find them in the store but only found 3&#34; of 5 &#34; ones that were too tall. These  work perfectly!
I needed something to lift the head end of the mattress when I traveled (cruise) because I have a GERD problem. This did not work as well when put under the legs, because it made it hard for the cabin steward to move the bed to make-up the bed. It worked perfectly between the mattress and box spring.
Worked with both large and small bed wheels. I have used this product for more than six months to raise the head of three beds to improve circulation.
Great product...use one or stack to meet needs. Would appreciate if there was a cushion liner or dense felt inner liner (like pads that keep furniture from scuffing hard floors) to muffle sound and prevent slippage. Had to buy those and glue them in place.
I needed bed risers in order to fit a storage container under my bed. I thought about the wooden ones, but I only needed an inch more, and the wooden ones raise the bed higher than what is necessary for my situation. Even though these are plastic, they seem strong and have held up this past week. The caster wheels don't roll around in them either and the risers stay put on my tile floors. All in all they are money well spent and highly recommend them.
There isn't much to say. They stack solidly, but I'm not using them stacked. My Queen bed has 5 legs, so I have three left over.No problems after about a month of usage.
Answer: If you stack them to raise it 5 inches I don't think they would be stable.  A block of wood with a middle indentation for the wheel would be better.  Even double stacked is not stable.  The least little move of the bed and they come undone.  I don't think I would even use them for the 1 inch lift.