Part Number # M393 with 4 inch clamp
Product Description:

New Hejnar Photo adapter plate with clamp for Manfrotto 393 Heavy Telephoto Lens Support. By removing your current Manfrotto clamp you can convert Heavy Telephoto Lens Support to standard Arca Swiss system. Clamp can be mounted with adapter  plate with standard 1/4-20 flat head screw and two 10-32 screws. It is the best quick release system for tripods and monopods when combined with Arca style ball head and quick release clamps.

All the corners and edges are rounded  for the safety to prevent from accidental injuries or damages to the other equipment.


Compatible with:
  • Markins including level release clamp
  • Really Right Stuff, including level release plate.
  • Arca Swiss
  • Wimberley
  • Kirk
  • Photo Clam
  • Foba 
  • Vanguard ABH Series Ball Heads (ABH is Vangaurds only Arca-Compatible series)
  • Custom Brackets
  • Jobu Designs
  • Acratech
  • Other Arca swiss type products 
Clamp Specification:
  • 4.00 inch long
  • Weight 5.5 oz (157g)
  • Center socket is countersunk on top for 1/4-20 or M6 screw, but also threaded 3⁄8”-16. .
  • Two outside holes are taped 1/4-20 and 45 mm apart from each other.
  • 2.6mm deep relief grooves   guarantee compatibility with most plates/rails.
  • Relief groove  prevents free fall when the clamp is not fully closed and your plate has safety stops
  • Knob is captive. Knob stops at maximum opening  - cannot be lost in the field
  • Knob is made from one part aluminum. No room for dust or sand.
  • Back side has grove to match some ball heads connection and preventing it from twisting.
  • Made from 6061-T6 Aluminum.
  • Black hard coat anodized.
  • Made in USA.
Plate Specification:
  • 4.00 inch long
  • 1.8 inch wide
  • 0.375 inch thick
  • Made from 6061-T6 Aluminum.
  • Black hard co

Auction Includes:

  • One adapter plate with mounting screws.
  • One F64ab Clmap with 1/4-20 flat head screw
  • Hex key for  screws.
Shipping Information:
  • Free Shipping with USPS First Class Mail. 
  • Tracking information provided. 
  • USA Costumers please note that USPS packages may travel much longer than the estimated delivery time and tracking information is not always updated daily. 
  • If your order is time sensitive, you need daily tracking update please use FedEx, UPS or Express Mail as delivery service during checkout.