NEEWER 15.7"/400mm Rail Bar Vixen Style Dovetail Plate, Metal Mounting Plate Saddle with M6 1/4" 3/8" Camera Screw for Telescope Mount Adapter OTA Equatorial Tripod Sky Astrophotography, QR009 - 10102167

• 【Universal Compatibility】 Featuring a Vixen style dovetail at the base, this mounting plate is compatible with any standard vixen style saddle manufactured by various brands 【Diverse Mounting Points】 Four 2.83" (71.8mm) slots are designed for installing balancing equipment. 0.25" (6.4mm) in width, the slots can accommodate M6 and 1/4" screws. Each slot also has two3/8" threaded holes (M8 countersunk holes) with a spacing of 1.4" (35mm) between each hole in the same slot and 2.53" (64.3mm) between the screw holes in two adjacent slots 【16 Pairs of 6.4mm Holes】 There are a total of 32pcs 0.25"/6.4mm holes with a spacing of 0.79"/20mm between each hole in the same slot and 1.55"/39.3mm between the screw holes in two adjacent slots. Three 1/4" threaded holes are also reserved on the back for mounting on various stands with 1/4" threads 【Precise Scale Markings】 Scale markings on either side help you find a precise position to mount your equipment for astrophotography, celestial observation, night sky watching and stargazing 【Nonslip Rubber Pads】 Soft nonslip rubber pads increase stability between the mounting plate and your device while protecting the device from unwanted scratches. Four safety screws at the bottom can prevent the mounting plate from dropping. (Note: It need to remove two safety stop screws for the saddle that does not support drop in loading)