"Breakthrough Photography Universal Arca-Type Quick Release Plate is precisely machined with a high quality stainless steel hand-adjustable, allen key and coin compatible screw. Never be left out in the field with a loose tripod plate again! This Quick Release Plate also features a loop for camera straps and a removable end-piece allowing the photographer to position the plate flush against the back of the camera body for increased stability. Breakthrough Photography also added two adjustable (and removable) stainless steel screws on either end of the tripod plate to prevent the camera from sliding off by accident if you haven't adjusted the tension 100% yet. If your tripod plate is allen key compatible only or if you still have the cheap one that comes with your tripod head, get this Arca-Type plate and be done with it. We've also included a high quality weather-resistant zippered bag which they designed to fit 50mm 1.8 lenses, camera batteries, lens cloths, hard drives, shutter release cables and lots of other field gear. Breakthrough Photography guarantee this universal Arca-Type plate is compatible with every Arca-Type tripod head ever manufactured or your money back!"