1. Two plates form a modular L-shaped installation; multiple 1/4Inch-20 and 3/8Inch-16 threaded holes 2. Multiple positioning holes for installation; multiple 1/4Inch mounting slots; aluminum alloy material. 3. The L-shaped platform enables you to mount a of cameras, plates, and accessories to tripods, sliders, or camera stands. These two pieces of perforated plate can be used individually or installed to form an L-shaped mounting bracket using the included 1/4Inch-20 screws. 4. Each piece has numerous 3/8Inch-16 and 1/4Inch-20 threaded mounting holes as well as 1/4Inch pass-through slots for flexible installation. 5. It features accessory mounting, providing 3/8Inch-16 threads with positioning holes to accept ARI compatible accessories. Type:L-Shaped Bracket Multi-Hole Expansion Plate Mounting Plate Suitable For SLR Cameras Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use. Colour:As Shown Material:Aluminum alloy Package Contents: 1 * L-Shaped Bracket Expansion Board 1 Set * Screw Mounting Accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.