Check the listing for details. See-Thru 1'' / 0.5 inch Riser Base Picatinny Weaver Rail Scope Mount 8 Slots. Color: Black, Condition: New. Listed at 9.99 USD. 8 Slot Picatinny Riser Mounts - Available in 0.5" Low Profile and 1" High Profile, Perfectly Meeting Your Different Needs! Riser Base Mounting On Picatinny Rail ｡◕‿◕｡ Riser mounting base can be mounted directly to Picatinny or Weaver rail. With 8 Slots 3.34" Long Picatinny Rail ｡◕‿◕｡ Top 8-slot picatinny rails allowing you add on any standard picatinny or weaver accessories, such as flashlight. See Through Design, Sturdy & Durable ｡◕‿◕｡ With see-through design, Made from aluminum alloy & high-strength steel, with matte black hard coat anodized, lightweight solid, safe durable. Easy To Install Or Remove ｡◕‿◕｡ Simple Side two locking thumb screw design, easy and quick to remove or install, tighten the thumb screws by hand and allen wrench to achieve stable and safe fixed. [ Note: Low profile riser mount comes with an allen wrench tool, Please ensure that the installation is firm before using]. Specification ◈ Material: Aluminum Alloy+Steel ◈ Rail Length: 8 Slots / 85cm Length ◈ Riser Style 1: High Profile - 1'' Height - Weight: 4.12 oz ◈ Riser Style 2: Low Profile - 0.5'' Height - Weight: 2.8 oz Package List: ♣ 1 x 1" High Profile 8 Slots Picatinny Riser Rail ,1 x Allen Wrenchs or ♣ 1 x 0.5" Low Profile 8 Slots Picatinny Riser Rail,1 x Allen Wrenchs or ♣ 2 x 1" High Profile 8 Slots Picatinny Riser Rail ,1 x Allen Wrenchs or ♣1 x 0.5" Low Profile 8 Slots Picatinny Riser Rail,1 x Allen Wrenchs or ♣1 x 0.5" Low Profile 8 Slots Picatinny Riser Rail,1 x 0.5" Low Profile 8 Slots Picatinny Riser Rail,1 x Allen Wrenchs