Lanxri Double Lock Quick Release Clamp With 38.5mm QR Plate Product Highlights Clamp StandardArca Swiss Plate StandardArca Swiss Mounting Screw: 3/8" (with a 3/8" to 1/4" adapter) Plate Width: 38.5mm Material: Aluminum alloy Color: black Compatible: for Arca Swiss standard all quick release plates, ball heads and tripods Product Description Made of high quality aluminum alloy, CNC precision machining, surface anode anti-oxidation treatment. Comes with a 38.5mm quick release plate. With 1/4" to 3/8" adapter screw, adopts for Arca Swiss standard, compatible for Arca Swiss standard quick release plates, ball heads and tripods, such as for RSS, for Arca-Swiss, for Kirk, for Wimberley, for Markins, for Sirui, for SUNWAYFOTO, for Benro, etc. Easy to operate, excellent operating experience and easy transporting. Net Weight: 128 g You Get: 1 Double Lock Quick Release Clamp With 38.5mm QR Plate Before you place an order, please provide me with English information to facilitate our delivery and logistics