Includes a bar that mates to a 10" meade SCT (and probably will fit a C9 or C11 as well), a sliding dovetail plate with two tensioning bolts, and a set of 5" diameter three point heavy duty rings wth delrin tips. Shown on a 10" SCT holding an ST80. Will easily mount a 4" refractor on an SCT. ST80 not included. The dovetail plate / ring assembly is quick
detachable, secure when mounted, and returns to accurate zero between uses. $150 shipped check, MO or paypal.