The Oben RP-5 Quick Release Plate is included with the OBRP5, BA-106A and BA-106T ball heads, and is sold here as a spare or replacement part. Its square shape allows you to place the plate and camera into the ball head in any direction. It has a 1/4"-20 slotted screw to connect it to your camera's tripod mount.
UPC: 847628572157
