... , significantly prolongs the service life.3, easy to take on the tape pull round device, easy adjustment of ... warp-lacking control device.3, tape pull round with take up on prevention device.4, double automatic feed device and ... .7, stop lights.8, computer automatic speed control system.9, automatic oil pump.1,The outside size of ... 12-14-15-18-20.3,the woof line up few Bs 3.4,Speed:1400S/Cent5,Noise: ...