The Sunwayfoto DP-60R Universal Quick-Release Plate is an Arca-type and RRS compatible plate made from CNC machined aluminum. It has a satin anodized finish that provides resistance to abrasion and corrosion. Dual safety-stop screws prevent the plate from being accidentally released from its clamp. Rubber mats on the top of the plate provide an anti-twist surface so that your camera stays aligned with the plate, and a slot on the plate allows you to attach a camera strap. Two hex keys are included for adjusting the safety-stop screws and camera mounting screws, two of which are provided: a 1/4″-20 and 3/8″-16.