NEEWER Telescope Mount Tripod Adapter Base Saddle Clamp for Vixen Style Dovetail Bars, with M6 M8 Countersunk Bores for Astronomical Astronomy OTA Equatorial Head, Drop in Mounting Supported, QR011 - 10102281

• 【Standard Vixen Style Dovetail Bars Clamp】 Compatible with vixen style dovetail rail bar plates for astrophotography, astronomical observation, night sky watching, and stargazing 【Drop In Mounting Supported】 Tilt the rail bar plate and insert the lower end into the saddle clamp, then slide it in until the rail bar plate sits flush inside the clamp. Note: the rail bar plate is not included 【Long Adjustment Screw Knob】 The prolonged screw knob lets you unimpededly adjust the clamp with a telescope installed. Straight knurls provide a firm grip for greater locking strength 【Sufficient Mounting Threads】 2 x M8 countersink bores with 35mm spacing. 5 x M6 countersink bores (also for 1/4" screws) in total: four M6 countersink bores with 38mm spacing and a M6 countersink bore 19mm from the center. 4 x M6 threaded holes on both sides. Achieve attachment for the saddle to the equatorial mount head and optical tube assembly 【For Various Tripods or Tripod Heads】 There is a 3/8" threaded hole on the bottom center as well as a 3/8" to 1/4" screw thread adapter included for easier mounting on various tripods and tripod heads with a 3/8" or 1/4" top screw. Also designed with a bubble level, the clamp helps you easily keep the telescope parallel to the ground