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How to change and adjust the knives of an industrial overlock machine. SUBSCRIBE TO OUR YOUTUBE CHANNEL - https://goo.gl/zDU1I2 LIKE OUR PG. ON FACEBOOK - / ccmcostura FOLLOW US ON INSTAGRAM / ccmcostura JOIN OUR TELEGRAM GROUP https://t.me/joinchat/HDCF_AQmOasQfQhc