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: Can anyone give me the exact ID and OD of each end of this reducer?
Document: If you buy this know that the 4 inch end fits a hose. I bought it for my table saw but the saw and the reducer were the same size. I had to buy a coupler to connect the two,  The 2 1/2 inch end has the same OD size as a shop vac attachment, so the hose connects to it OK.
These are the dimensions I measured on my sample:Small ID: 2.290, Small OD: 2.472, Large ID: 3.672, Large OD: 3.933Hope this helps.
This item was a recommended "...people also buy..." when buying the Delta 50-359 12-inch Planer Connect. They do not connect together. Each have the same OD & ID. Searched everywhere for an adapter or PVC pipe with the right dimensions; no luck. Used Gorilla Tape. Works great.
This device is great to use if you are trying to collect dust from a table saw or planer. However, you need the Woodstock W1038 4-Inch Quick Connect and Disconnect so that it will slip over the 4" port. I simply duct taped this W1038 to the W1044 to join the two ends (They have the same ID and OD).
This device is designed to work with your 2 1/2" shop vac hose. The large end is for attaching a piece of flexible tubing, and the small end is for attaching your shop vac. I have it attached to my Rigid 4512 tablesaw: flex tube from the saw port to the large end of the reducer, then attach the shop vac to the small end. Secured with worm clamps. Works like it's supposed to for me.
The ID is not 4 inches so i have no clue as to what it fits. fortunatly I have a building entrance boot  that is used for coax that fits the bandsaw just fine then this fits the boot so all is good.
A little plastic adapter that does what it should. Buy it if you need it. Be aware the measurements are the outside diameter of the adapter, so you can't slip a 2-1/2 or 4" OD fitting onto it.
I cannot think of a better gift the home shop owner can give to him/herself than a dust collection system. The time it takes to set it up is minimal and the first time I used my miter saw with the vacum hooked up I almost started to tear up a bit.
This ended up doing what I wanted but not as slickly as I hoped for. The description didn't give me a complete picture of how this would work. I had hoped it would slip over or into the 4&#34; exhaust on my bandsaw, it didn't. It also is 4&#34; so I cut it down to about 3/4&#34; lenghth and duct taped it to the bandsaw.
It fit 4&#34; hose on one end and 2 1/2&#34; hose on the other. Do you have any questions?Duhhhhh.
Answer: yes