1. Camera Quick Release qr thumb screw with 1/4 inch thread works with standard tripod mounting plates with 1/4" thread hole.
2. 1/4 inch metal male thread,there is also a 1/4-inch metal hole at the bottom for other settings
3.Total length: 20mm/0.78";Thumb wheels (Knurled Cap):23mm/0.9" in diameter
4.Made of aluminum alloy with black anodized for high durability.
5.With 1/4 Inch Male to 1/4 Inch Female Screw Adapter For Camera Tripod L Type Bracket,Camera Mounting Plate and more.