1. 1/4 inch thread metal tripod screws with C-ring. 2. Made of metal material, solid and durable. 3. C-ring with flat head screwdriver slot, can drive it by coin or screwdriver. 4. Can be used on any quick-release(QR) plates, tripods, monopods, telescopes, ball heads, lens collars, lens plates, camera and more.
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