※ Material: A2 stainless steel

※ Surface treatment: natural color

※ Standard: (GB894) / DIN 471

※ Size: ￠3-￠75

※ Color: silver

※ Specifications: Model representation method: do. The specification do is not the inner diameter of the retaining ring, nor the outer diameter of the retaining ring; it is the distance from the inner diameter of one side of the retaining ring to the outer diameter of the other side, or the outer circle of the mounting shaft. (Do not measure the diameter of the groove).

※ Uses: generally applicable to assembly / machine / machine tools, accessories and camera on a tripod, bracket shooting.