The Peak Design PROdrive Screw lets you attach Leash, Cuff and sling-style straps (like those made by BlackRapid) directly to the bottom of your camera. The PROdrive is the same piece of hardware found in the PROplates for Capture, but it includes a durable rubber non-twist pad so you can use the connection screw as a stand-alone accessory. It screws into any 1/4 inch, 20-threads-per-inch standard tripod mount on any camera.
The carbon steel D-ring on PROdrive has an extra-wide load bearing axle, meaning that you can hang any camera/lens/grip combination from your strap and it will be completely safe and secure. The D-ring indexes in 3 positions, so when you are not using PROdrive the D-ring will rest tight against the bottom of your camera. Additionally, PROdrive has a 4mm hex-drive (hex wrench included) for ultra-secure installation. The PROdrive is made from solid carbon steel with a black oxide finish.