1.±¸°Ý¿ÀÂ÷°¡ ¾øÀ½2.°µµ°¡ ³ô°í °¡º¿ö¼ À̵¿ÀÌ Æí¸®ÇÔ3.¼ÂÆÃÀÛ¾÷À» ÅëÇØ º¯ÇüµÇÁö¾ÊÀ½.1. Size of syilnder are exact.2. Convenient to carry because soft and high intensity.3. Modifications are not occur in setting machine.