Haoge 300mm Multi-purpose Dual Dovetail Long Quick Release Extender Rail Sliding Plate for Camera Tripod Ballhead Clamp fit Arca

"The Haoge HQR-300 universal quick release long plate is an Arca-type compatible multi-purpose rail with a laser-engraved reference scale with 1mm increments on both sides. It allowing for easy nodal point adjustments. There are six holes at the ends of the plate for DIY L Plate or building other support systems. Dual dovetail design with 300mm in Length, support two camera or flash at the same time.

Features:
Metal materials, CNC precision machining, surface oxidation treatment.
Dual dovetail design, both sides can be mounted Arca-type equipments.
Compatible with a variety of digital cameras.
With 39mm AS standard interface, compatible with all Acra-Swiss Style quick release platforms.
Accurate calibration fulfill the demand for quickly locating.
High quality aluminum alloy is used to ensure a light weight but super high strength support.
Four safety stop screws in both side to prevent drop of camera by accident.

Specifications:
Material: Aluminum Alloy
Color: Black
Length: 300mm
Compatibility: Arca-Swiss Standard

Compatible with:
RRS / ARCA-SWISS / KIRK / Wimberley / MARKINS / SUNWAYFOTO / Kangrinpoche / BENRO / SIRUI Ball Head, Clamp or Panorama Head of AS standard interfaces
(Note:the item can not fit RRS level-release system)

Package included:
1 x Haoge HQR-300 Quick Release Long Plate
2 x 1/4"" Hex Socket Screw
1 x 1/4 to 3/8 Screw Adapter
4 x Stationary pins
2 x Allen Wrench
(Note: Ball Head is not included)"