Made by CNC Aluminum  Alloy,extreme durable.
Precision Machined from Aircraft-grade Aluminum Alloy with Anodized Black Matte Finish .
Friendly Hex Screws with Retention Features and Full Length Locking Plate to Guarantee Easy Installation.
Fits All Picatinny/Weaver Rails.
To Mount your scope on airsoft rifle.
Length:75mm
Ring Diameter :1''

Install on 20mm Weaver Rail, Scope Rail & RIS/RAS Rails 
Weight(Gram):135 (With Box)