R9 Center bolt / Top bridge center nut
➤鋁合金：黑色、銀色
➤鈦合金：魔藍色、金色、鈦原色
1.Made of 7075 aluminum alloy and made by CNC cutting
2.Provide a more beautiful design appearance and add an M8 screw hole in the middle part . You can lock the Round ball to hold the sports camera or mobile phone holder, solving the problem of nowhere to put 3C products .
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