1 Inch Scope High Weaver Picatinny Mount Ring 21mm Base

Specifications:
Tube Diameter: 25mm / 1 Inch
Attaches to Rail: Picatinny/Weaver 
Height: High

Affordable Scope Mounts
High-durability Aluminum Alloy
Anodised Black for a Great Finish.

Height (from bottom to ring center): 30mm (1.18 inch)
OR
Height (from bottom to ring center): 30.50mm (1.20 inch)