Depending on what scope you may want to use it on, You may want to add felt on the inside.
IF you have a double stack Lunt scope, you can use your front LS50f to screw on to the plate
or just buy the LS50f with the appropriate LUNT diagonal and install it.
FOR USE WITH A LUNT DIAGONAL - BLOCKING FILTER. NOT FOR USE WITH A REGULAR STAR DIAGONAL!!!!
IF YOU ARE NOT SURE, CALL LUNT
The I.D. is 5.5 at the tip of the plastic screws all the way in and 6 14/16 inches I.D. all the way out.
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