Weaver Detachable Dual Extension Top Mount rings let you position your scope forward or rearward to get ideal eye relief. Weaver's original cross-lock ring design with a steel strap for added strength and an aluminum saddle for reduced weight.
Specifications:

Type	Top Mount
Tube Diameter	1"
Height	High
Size	1"
Finish	Black
Style	Weaver
Material
Style Description
One or Two Piece	2
Adaptor Type
Mount Type	Quick Detach
Lock Type