If you constantly swap between 2" eyepieces and 1.25" eyepieces when observing, you might be interested in this adapter. This is an older version of the Delrin 1.25" adapters (i.e. 2" outer diameter, 1.25" inner diameter) made by Tom Noe. The newest models are "parfocal" but this older one moves the eyepiece shoulder out by only 4.4mm, which is probably less than half what most adapters out there do. There is a nylon snugging/set screw embedded in the barrel. This is designed either to provide slight friction to hold the eyepiece and still allow eyepieces to be changed without adjusting it or enough friction to make the adapter stay permanently with the eyepiece, effectively converting a 1.25" barrel to 2" without an unsightly set screw hanging off the side. That's how I use the other ones that I have. Just this one is for sale.
There are a few scratches here and there, nothing major.
$13 + $4 shipping in US. PayPal or postal money order, please.