This is a large all aluminum focuser that will fit a 6 1/8" OD tube. I think it could be adapted to a larger tube size if needed. It has nearly 6" of focus travel and is very smooth. I am trying to upgrade to a crayford style focuser for my homemade 6" refractor, so I am trying to sell some of my extra project parts.
I am asking $50.00 Shipped for this. It also has large machined focus knobs that you can put rubber "O" rings on for better grip.
PayPal prefered, or Money order...