Extra QR plates Camera Mounting Adapter Parts Replacement allow you to conveniently swap out more than one camera with the same tripod. | **𝗜𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁** 𝗕𝗮𝘀𝗲 𝗦𝗶𝘇𝗲 - 𝟭 𝟯/𝟰" (𝟰𝟰𝗺𝗺) - The tapered square base that fits into the tripod measures 1 3/4” (44mm) across - this is what fits into the opening mount of the tripod head. See product description for complete list of compatible tripod models.UNC 1/4-20 interface, made of ABS Resin, Lightweight and durable. | Matte surface of non-slip design, with cameras on will not twist, 6.6lb load capacity.ANTI-SLIP RUBBER PADS: Enhance the grip between each plate and the mounted gear, and protect the gear from any damage due to mounting | Features a metal pin and a high-quality metal thumb screw, unlike other brands. No tools required to tighten the screw. | NOTE: Camera, tripod or other accessories are NOT included. 2x Quick Release Plates are included.