Farpoint Universal Dovetail Plate is compatible with "D" sized (Losmandy) saddles and telescope mounts that use this size dovetail bar. The FDUP is drilled & tapped with several hole patterns to be compatible with many different ring and clamshell combinations. Rounded corners and chamfered edges on the Farpoint Universal Dovetail Plate allow for smooth set up even in the dark. Measurements are 14.0" long, 0.5" thick, and has one 0.25" X 5" counter-bored slot. The FDUP, Farpoint's Universal Dovetail Plate and hardware, is used to mount Tele Vue, Parks, Takahashi, Questar, Vixen and Meade refractors and others. Farpoint dovetail plates are compatible with Losmandy style dovetail accessories!