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Floor 2, No. 5, Lane 3, Weizai Area, Dongtang Community, Shajing Street, Banan District, Shenzhen, Guangdong, China (Mainland)
Adjustable knob M4 M5 M6 M8 Black Star Head Adjustable Threaded Stud clamping, US $ 0.1 - 0.2 / Piece, Guangdong, China, zfhong, M4 M5 M6 M8 M10.Source from Shenzhen Zhongfa Precision Hardware Co., Ltd. on Waimaotong.com.