This DualSide Dovetail plate has one side with a V-style dovetail and the other side as an Arca Swiss dovetail.  This makes it easy to attach your camera or telescope right to your mount/tripod.  There are two threaded holes (1/4"-20) and three unthreaded slots to make it easy to lock into place to your camera, or telescope to your camera saddle or mount adapter.                 

This plate is:

• Length:  245 mm (9.64-inches).
• Width top: 38 mm (1.496-inches.)
• Width bottom: 41.7 mm (1.641-inches.)