F=Female
M=Male
The circular part is easy to tighten, it has a side hole, can be used for further strengthening;
Size: D16*16mm/D16*19mm
Color: Black
Material: Aluminum alloy
Aluminum alloy surface process: sandblasting anodic oxidation
Product weight: 2.7g/3.2g/3.8g/6.3g/6.8g/5.2g/5.7g
Packing method: Bag
Quantity: one piece
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