Mimgo Store 1/2" 3 Slot Low Riser 20mm Weaver Picatinny Rifle Base Scope Mount Rail New Material: Aluminium Rail Type :Fit any 20mm weaver/picatinny base. Suitale for elevating scopes, sights, flashlights, and so on. Attachment and securing is done by two allen key headed bolts which also secure it on the mount and stop its moving forwards and backwards Package includes: 1Pc x Weaver/Picatinny Rail Riser. 1Pc x Allen Key