Used but in great shape. CNC machined of 2024 alloy (aircraft aluminum) to have minimal play (average less than .0025" play, depending on your eyepiece). Brass compression ring will not mark your precious eyepiece barrels like a standard retaining screw.
Only adds .5" of height to your focuser. Total height is 1.375", .875" of which is below the top of the drawtube.
$20.00 Shipped. PayPal preferred. Thanks for looking.