Ida

Thank you Barb! Iust have been typing when you were. Thank you so much for responding so quickly! 
Ida

Update! Dumb blond award... I asked my husband for help. He was smart enough to look inside the open end and see screw lines inside. So...there is no metal rod that sticks out of that end. He pointed to the other bar that had a screw in the end. Duh! So, thank you for the help that I don't need. 
Relieved and feeling sheepish in Kansas, 
Ida
 

Ida, that silver extension fits into the "eye bolt" at one end of your table. There is a separate large bolt that goes through the "eye bolt" on the other end - it screws into the end of the roller that DOESN'T have the silver extension. If you still have your assembly instructions, you can go to the section for adding the rollers - all the info is there. There is also a silver collar that serves as a spacer between the "eye bolt" and the end of the roller, on the screw-in bolt end. You can get more help - and lots of photos - if you visit the We Love APQS Facebook page and ask for help there.