High Speed Double-Chain Stitch Combination KH-420BD; KH-420SL

* The combination of two machines allows create some unique patterns with extremely high performance;
* Used mainly for sewing mattress borders;
* Innovative appearance and patented design, more beautiful and steady;
* Maximum speed up to 1300RPM, resulting in higher efficiency;
* Windows operating system, easy operation,  precise patterns  and intuitive control; 
* Computerized compensation and extended amendment, ensuring better precision and perfection;
* Infrared thread break detector and automatic thread trimming;
* Japanese servo motors for controlling, ensuring the best precision and extreme stability;
*  Adjustable Quilting length quantity, auto stop when completed;
* Split looper design, replace the looper without adjustment;
* Set-up buttons for buttons for fine positioning of the looper,
allows you to gently rotate the shaft in both directions and adjust the looper position more easily;
* The whole machine is protected with the infrared safety light curtain protection, touch the hand to stop, more secure and reliable.