... Noise, 2.Easy to use, 3.Latest Type, 4.Convenient, Principle: air compressor generats air pressure by the vacuum ... finished overlock chain will be inhaled into chain cutter, through the cutter cutting line reciprocating motion to achieve purpose.Benifits: ... workers5, to improve the production efficiency 20%Optional chain cutter for overlock machine:Description of Key Components:Product Details: ...