electrical steel wire threader pipe concealed line threader thread guide machine wire network cable pay-off string spring wire grip 电工钢丝穿线器管道暗线穿管器引线器电线网线放线串线弹簧拉线器

[round head + round head] solid spring [flat head + flat head] solid spring [roller skating head + flat head] solid spring black and red three-strand plastic steel [round head] threader black and red three-strand plastic steel [flat head] threader

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