TACFUN 3 PCS Tactical 45 Degree Angle Offset 20mm Weaver Rail Mount Picatinny 4 Slot Durable all metal construction Lightweight, made of aluminum with black anodized matte finish The offset design creates easy access to on/off switches for flashlights, lasers, and red dot sights Mounting versatility eliminates interference with Perfect for mounting backup reflex sights side by side with your primary optics Easy installation Dimensions: 1.75" x 2" Weight: 1.4 oz Color: Black