Up for sale here is this pushbutton knob cover from an Onkyo A-7 amplifier. This is used for the whole row of pushbuttons--loudness, muting, high cut, subsonic, and mode. It is in great shape with just very light wear. This will work on the A-5 and A-10 as well. 

Physical dimensions of the knob are 14.55mm long x 8.4mm diameter.

US shipping and handling is $6, and international is $20, no matter what quantity you buy. All my small parts are set up for combined shipping, so just use the "add to cart" feature and then check out all at once, and it will combine shipping. If you have any questions, please ask.

I have more Onkyo parts and other vintage electronics listed--feel free to take a look!