Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: Is one of its spacers expressly made to go at the bottom of the stack? Is at least one spacer chamfered to mate with the top of this item's clamp?
Document: Only raised my handlebars 2 inches. Wish they had this in the listing and made one a little taller. But good product anyway. Well built and attaches easily. All parts included to attach to bike.
I went with a smaller frame to get the top tube length I needed, but that made the steer tube a little shorter than I was comfortable with. This gave me just the height adjustment I needed.
After I installed the necessary spacer, I wanted to drop the  forks  to check my bearings before finishing and the long top screw, this is a very long 6 mm x 1.0 socket screw not available from anyone but a specialty bolt company, it spun out fine for about  1/4 inch and then started to catch and bind.
Works great to raise the handlebars on my hybrid bike. It is sturdy, light weight, and comes with spacers and long screw.
Fairly easy to install and adjust with the included spacers. Nice solution to provide a more upright riding style. We took the bikes to a local state park and rode nine miles with no issues.
Definitely got my handle bars up where I needed them. Easy install, looks nice. Make sure you fully reassemble your handle bars before you tighten the center bolt. You get one shot to get it right. Would definitely recommend this product.
This is a very high quality riser. It was easy to install and all the spacers give you lots of options for adjustments.I actually cut it down a bit to get the exact height that was most comfortable for my mountain bike.Highly Recommend.
A nicely machined and finished piece. Raised bars about 3 inches, about all I could go without changing cables. Super fast delivery. Highly recommended.
Easy to fit and made a massive difference to my ride (no back pain).Haven't ridden it very hard yet... but I don't suppose I will.
I bought this thinking I'd prefer riding a bit more upright on my mountain bike and sure enough it met all expectations. Well made & easy to install. Very happy with this purchase.
Answer: no