DBA 800 Brass band guide roller is used to resolve abrasion problems of existing resin roller to eliminate abrasion load and band stuck. High (hardness 65) intensity cutter is used to significantly enhance cutting capability and life time of band. Using urethane wheel for easy portability and eliminates load crushes after long term usage. As body unit is assembly type, arch expansion is easily available for changed package size. Household model DBA-201N (Single phase) is also developed for the first time in Korea that is operated under household power (Single phase). All the parts are precisely manufactured with N.C control processing facilities for smooth operation and parts durability is enhanced to always secure perfect performances.