• Campatible with 15mm rod
• With 4 holes on the clamp
• With 3 black ajustable knobs
• Material: aluminium alloy
• The raillock support set comes with four holes on the clamp for rod support rail system.
• It is used to extend the application of rigs, such as handle grip, matte box, flash, LED light etc.
• It fits rod from diameter from 14.9mm to 15.5mm.