Hejnar M808, F63 clamp, Manfrotto 808RC4 Arca-Swiss conversion, geared head adapter plate, video head quick release upgrade, CNC aluminum dovetail clamp, modular tripod system, Arca-compatible fluid head, Hejnar Photo USA, 6061-T6 aluminum, captive knob clamp, safety stop grooves, panoramic tripod adapter, RRS compatible, Markins, Wimberley, Kirk, Acratech, Photo Clam, Foba, Jobu Designs, Vanguard ABH

Please note: Not all items shown in photos may be included. Refer to the "Auction Includes" section for exact contents.

New Hejnar Photo M808 conversion set for Manfrotto 808RC4 head (head not included). This adapter plate and F63 clamp combo enables full Arca-Swiss compatibility with your Manfrotto geared head. Clamp can be rotated in 90° increments and detached for use on other gear.

Installation is simple:

1. Remove lock-down lever using included 3mm hex key
2. Attach plate to head using two 10-32 screws

This is a rugged, modular quick release system for tripods and monopods, built to international dovetail standards.

🔗 Clamp Compatibility

• Markins (including level release clamp)
• Really Right Stuff (RRS)
• Arca-Swiss
• Wimberley
• Kirk
• Photo Clam
• Foba
• Vanguard ABH Series
• Custom Brackets
• Jobu Designs
• Acratech
• Other Arca-style products

📐 Clamp Specifications (F63)

• Length: 3.25"
• Mounting: Countersunk for 1/4-20 screw; also threaded 3⁄8”-16
• Hole Spacing: Two sets of 1/4-20 tapped holes at 45mm and 30mm
• Relief Grooves: 2.6mm deep, compatible with most plates/rails
• Safety Stops: Prevent free fall when clamp is not fully closed
• Captive Knob: One-piece design, dust/sand resistant
• Material: CNC-machined 6061-T6 aluminum
• Finish: Black hard coat anodized clamp, clear anodized knob
• Hardware: Stainless steel
• Made in USA

📦 Auction Includes

• One adapter plate (M808)
• One 3.25" clamp (Model F63)
• One 1/4-20 × ¾" screw
• Four 10-32 screws
• Hex key for ¼-20, 10-32, and original level screw

If you prefer a different clamp model, let us know and we’ll ship your requested version.

🚚 Shipping Information

• Free USPS First Class Mail
• Tracking information provided
• Note: USPS delivery times may vary and tracking updates are not always daily
• For time-sensitive orders, please select FedEx, UPS, or Express Mail at checkout