Scope Mountable Centre Top Bubble for One Inch and 30mm Scopes

Highlights:
100% avoid CANT, with One Inch Adapter Ring, Easy to Use, Designed for airguns and firearms, Full Metal

Specifications:
100% avoid CANT
Install on 30mm and 25.4mm one inch riflescope
Length: 14mm (0.55 inch)
Weight (net): 40g (1.4 ounce)
High-durability aluminum alloy in black matt
Shock proof can be used on firearms
Can mount either side of the scope (bubble on the top)
With paper instruction, easy to use without special tools