The CG90Y overlock unit is equipped with a super fast sewing head (6500 rpm) specifically made in Japan by Yamato and with the original Vi.Be.Mac. puller system, which result is an incredible improvement in the quality of the finished garment with the 2 quarters of material perfectly coupled, no twisted effect on the legs! The puller system avoids the need of a skilled operator, who should be (in case of standard unit) pulling the quarter pieces of trousers in order to match perfectly the two parts.